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Issue 1, Volume 5,
January 2010
Title of the Paper: Eliminating
Hysteresis Effect of Force Actuator in a SPM
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Authors: Jium-Ming Lin,
Po-Kwang Chang
Abstract: This research is to use fuzzy controller to eliminate hysteresis
effect of a force actuator for a Scanning Probe Microscope (SPM). This
improvement has been verified by MATLAB simulation and practical
implementation to reduce the hysteresis effect of the force actuator.
Comparisons with two previous designs with and without Linear Velocity
Transducer (LVT) for inner-loop feedback compensation are also made. Thus the
new system design is cheaper and valuable.
Keywords: SPM, LVT, LVDT,
Fuzzy controller, PI compensator, Force actuator, Hysteresis effect
Title of the Paper: Modeling and
Simulation of a Single Phase Grid Connected Photovoltaic System
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Authors: Amal A. Hassan,
Faten H. Fahmy, Abd El-Shafy A. Nafeh, Mohamed A. El-Sayed
Abstract: This paper gives a complete computer simulation program of a single
phase grid connected PV system using Matlab/Simulink and SimPowerSystem tool
in order to monitor the performance of each unit of the system during a
selected day in the year representing a sunny day and another cloudy day using
the hourly data of load demand, solar radiation and temperature at The Kharga
Oasis site, as a case study. The system consists of a PV array subsystem as
the primary source of energy, the electric grid as an auxiliary source of
energy, the battery bank as a stand by source that feeds the electrical load
in case of grid failure. This paper also focuses on the operation control of
the system. This control is on/off switch control according to modes of
operation of the system and there is a control of inverter using PI controller
to achieve the maximum power point of the PV array. Finally this paper gives
the simulation results of the required system output parameters; PV output
power, grid power, load power, battery power, and battery voltage and state of
charge.
Keywords: Renewable
energy, Photovoltaic systems, Electric grid, Modeling, Control, Simulation
Title of the Paper: Stability and
Control of the UAV Formations Flight
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Authors: Teodor-Viorel
Chelaru, Valentin Pana
Abstract: The purpose of this paper is to analyze the flight stability of an
Unmanned Aerial Vehicles (UAV) formation by using 3 degrees of freedom (3 DOF)
models. The problem of flight formation will be approached in a simple manner,
by using 3 DOF nonlinear models, as well as using a linear one. This
theoretical development allows us to build stability matrix, command matrix
and control matrix and finally to analyze the stability of autonomous flight
of the UAV formation. The work will present and analyze the calculus results
for developed solution. The novelty of the paper consists in algorithms that
allow evaluating the stability of the UAV formation. The results will focus on
flight stability of a UAV formation and its answer to regular perturbations.
Keywords: Flight,
Formation, Automation, Stability, Control, Simulation
Title of the Paper: Turbo-Generator
Vibration Fault Diagnosis Based on PSO-BP Neural Networks
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Authors: Youpeng Zhang,
Hongsheng Su
Abstract: To overcome the flaws of traditional BP learning algorithm of its
low convergence speed and easy falling into local extremum during
turbo-generator vibration faults diagnosis, a novel algorithm called PSO-BP is
proposed for artificial neural network (ANN) learning based on particle swarm
optimization (PSO) in this paper. The algorithm covers the two phases.
Firstly, PSO algorithm is applied to optimize the weight values of neural
networks based on training samples. BP algorithm is then applied for farther
optimization based on verifying samples till the best weight values are
achieved. In addition, to simplify the structure of the networks, rough set
theory (RST) is applied to implement the attributes reduction from the
diagnostic decision table quantified by Kohonen networks. Thus the learning
speed and the misjudgment rate of the diagnostic networks are improved,
dramatically. Finally, the trials in turbo-generator vibration faults
diagnosis indicate that the proposed method possesses better forecasting
accuracy and lower misjudgment rate, and is an ideal pattern classifier.
Keywords: Turbo-Generator,
Particle Swarm Optimization (PSO), BP neural networks, Rough set, Kohonen
networks, Evaluation
Title of the Paper: Fuzzy Sliding Mode
Control for Applying to Active Vehicle Suspentions
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Authors: Milad Geravand,
Nastaran Aghakhani
Abstract: Suspension system is an important part of the car design, because it
influences both the comfort and safety of the passengers. Controlling of
Suspension system has special difficulties since this system is highly
nonlinear, essentially unstable systems and energy demands of the system. In
particular, this article is focused on experiments with the physical model of
semi-active quarter-car suspension that using the method of fuzzy sliding mode
which uses the fuzzy logic techniques to adjust the control gains that occur
under the sliding mode. Functionality of the modification was verified taking
various experiments and the results show that the proposed fuzzy controller
robustly is efficiency. The computation of the command force to apply to the
system in order to control the suspension was based on the fuzzy logic theory
for which three essential steps were developed: fuzzification, inferences, and
defuzzification. To put into evidence the efficiency and the performances of
such a control system, we have compared the results obtained through the
sliding mode technique solely, then through the combination of the fuzzy logic
theory and the set up by the sliding mode, and the fuzzy sliding mode.
Keywords: Fuzzy Logic,
Active Control, Vehicle Suspension, Sliding Mode
Title of the Paper: Aspects of Energy
Use Monitoring Systems
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Authors: Marius-Constantin
Popescu, Nikos Mastorakis
Abstract: The system presented is based on Energomanager application installed
on large energy consumers. The application is described in detail in the
latter part of the paper; to the first part is the description of acquisition
and communications equipment used. Teleinventory system performs a complete
solution for power management, both at branches and at branches, using the
most modern information and communication technologies.
Keywords: Electric and
solar, Data acquisition, Communication, Monitoring
Issue 2, Volume 5,
February 2010
Title of the Paper: Realizations of 2D
Continuous-Discrete Systems with Boundary Conditions over Spaces of Regulated
Functions
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Authors: Valeriu
Prepelita
Abstract: 2D hybrid continuous-discrete systems with boundary conditions are
studied, in the general approach of the coefficient matrices and controls over
spaces of functions of bounded variation or of regulated functions. The formul?
of the state and of the general response of these systems are provided, both
in the case of causal and acausal cases. It is shown that the behaviour of the
systems with boundary conditions is characterized by some generalized 2D
semiseparable kernels. The existence of realizations of generalized 2D
semiseparable kernels is proved and necessary and sufficient conditions for
the minimality of the realizations are obtained.
Keywords: 2D
continuous-discrete systems, input-output map, regulated functions, functions
of bounded variation, semiseparable kernels, realizations
Title of the Paper: The Heuristic and
Analytical Methodologies Applied in a Computer Assisted Exercise
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Authors: Ion Badoi,
Teofil-Cristian Oroian
Abstract: This very brief example of military simulation shows usefulness as a
practical basis for education, training, analysis, and decision-support. As an
analytically challenging field of pursuit, military simulation has the
potential to make a significant improvement to the effectiveness of military
personnel.
Keywords: Modeling and
Simulation, Analytic Model, HERO heuristics Helmbold model, Asymmetric
Conflict, War Gaming, Computer Assisted Exercises (CAXs)
Title of the Paper: Current Trends on
Command, Control, Modeling and Simulation of the Induction Machines
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Authors: Marcel Ionel,
Mihail-Florin Stan, Elena-Otilia Virjoghe
Abstract: AC motor drives have produced and still produce a particularly high
impact in many technical applications. Advantages of adjusting the frequency
operation can not be fully exploited without adjustment command and control
strategies through modeling of the corresponding components. Simulation of
drive systems is complicated due to nonlinear high level they bring power
electronics and also due to control, adjustment and protection in the transfer
of power flux. Moreover, mathematical models of semiconductor and control
functions not yet found in many programs and this requires the designer or
specialist to introduce its version in the simulation program [1]. Currently
known multi-level modeling, which is available to describe static converters
and each model can introduce undesirable effects on the behavior of electric
machine [2]. This paper presents the current trends of advanced control
techniques and control of induction machines used for variable frequency
drives, depending on the torque, speed and rotor position. It analyzes the
possibilities of command and control without sensors and estimates are made of
results obtained by modeling and simulation of the control and adjustable
system. Also, present paper recommends how to run a simulated vector
controlled induction electric machines.
Keywords: Non-sensorial
control, vector control, parameter estimation, modeling drive system, model of
vector controlled electric drive system, block diagram, mathematical models,
micro-models, macro-model
Title of the Paper: Inductive Voltage
Transformers Calibration by the Parameters
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Authors: Augusto F.
Brandao Jr., Izael P. Da Silva, Antonio C. De Silos, Dimetri Ivanov, Eduardo
M. Dias
Abstract: The accuracy class of an IVT – Inductive Voltage Transformer – is
typically assessed in laboratory installations either by comparing with
another IVT presenting greater accuracy and traceable to a national laboratory
or by using a capacitive divider. Calibration in the field using internal
parameters is considered herein, using results obtained from typical open and
short circuit tests and winding resistances, performed with common meters. A
Mollinger & Gewecke graphic diagram is employed together with the results of
an accuracy test previously carried out to determine the exact value of the
winding turn relation and of the primary winding dispersion reactance. These
values are used to calculate the phase and ratio errors, which must lie
between definite limits, defined by the accuracy class of the instrument. Four
commercial IVTs were tested to determine the validity of the procedure. The
errors are compared with those obtained with the Schering-Alberti method (AC
Bridge and comparison with standard IVT).
Keywords: Instrument
Transformers, Inductive Voltage Transformer, Voltage Transducers, Measurement
Errors, Error Estimation, Certification, Calibration
Title of the Paper: Observer Gain
Adaptation of Output Feedback Sliding Mode Controller with Support Vector
Machine Regression
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Authors: Sezai Tokat,
Serdar Iplikci, Lutfi Ulusoy
Abstract: The conventional sliding mode controller needs the exact knowledge
of system state measurements. In this study, nonlinear second order systems
with unmeasured system states and bounded external disturbances are
considered. The sliding mode observer based on nonlinear observation error
dynamics is considered and the observer gain is adjusted by using a support
vector machine based plant model. From the output of the support vector
machine model, k-step ahead predictions are obtained. Therefore, the value of
k is first analyzed to search for a proper value. It is also shown with the
simulations that the stability conditions are satisfied for the chosen
observer gains. Computer simulations are presented to show the effect of the
proposed gain adjustment mechanism on the performance of output feedback
sliding mode controller. It is seen that the trajectory tracking performance
is improved with respect to a conventional output feedback sliding mode
control scheme having constant sliding mode observer gains.
Keywords: Sliding mode
control, Sliding mode observer, Output feedback sliding mode control, Support
vector machine regression, Observer gain, Bounded external disturbances
Title of the Paper: NENA 1.0: Novel
Extended Nuclear Application for the Safekeeping of Contamination-Free
Environments
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Authors: Michael
Marszalek, Martin Eder, Andreas Tropschug, Alois Knoll, Hagen Hofer
Abstract: The accomplishment of inspection, safekeeping or cleaning tasks are
essential daily routines in industrial facilities. These tasks are associated
with time, personal expenses and physically demanding occupations. Various
robotic systems have been introduced for the automation of these routines. The
inspection and cleaning of severs or an automation of a biotechnology
laboratory are successful examples for robotic systems and automation [1]. In
this paper, we present a novel system for the autonomous 2D detection of
radioactivity and contaminated areas. The importance of autonomous detection
of radioactivity will increase in the upcoming years, due to stricter limits
for contamination levels, when using radioactive materials in nuclear
medicine, research or for nuclear power plants. The use of radioactive
substances will also increase for diagnosis and therapy in nuclear medicine.
Another area of application is the decommissioning of nuclear installations,
concerning work time and personnel expenses savings. The mobile robot is able
to scan the whole floor of a building, where radioactive contamination may
occur, such as floors in nuclear power plants, hospitals with nuclear medicine
departments or laboratories. It marks the contaminated areas in a generated
map of the building for further evaluation. The paper discusses the main
requirements of a navigation system for 2D detection of radioactivity and is
based on [2]. It presents the hardware and software set-up and some real-world
experiments with our mobile robot.
Keywords: Industrial
Application, Automation in Medicine, Automation, Robotics, SLAM, Path planning
Issue 3, Volume 5,
March 2010
Title of the Paper: Applications of
Fuzzy Logic in Continuous Casting
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Authors: Gelu Ovidiu
Tirian, Camelia Bretotean Pinca, Daniela Cristea, Marcel Topor
Abstract: In the process of continuous casting, the melted steel from the
melting pot is passed, through the intermediary of the distributor, in the
water-cooled crystallizer tank. In this way, a crust forms here which is
solidified at the exterior, and one of the great problems is its cracking or
even it’s tearing, due to several factors. Our paper describes a new control
method we should use during the continuous casting. This method is based on
the fuzzy logic, in order to avoid any crack inside the crystallizing
apparatus. This method contains two fuzzy controllers which, based on a set of
rules established with the help of the mathematical model to the crust
solidification process of the semi-product inside the crystallizing apparatus
and uses the experience of human experts, requires changes of the casting
speed value and the primary cooling water flow.
Keywords: Fuzzy logic,
base of rules, membership functions, control system, continuous casting
Title of the Paper: Changing Control
Rules Dynamically in Embedded Digital Control Systems
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Authors: Javier Vasquez,
Jose L. Vasquez, Carlos M. Travieso
Abstract: This paper details a model developed at the University of Costa Rica
to upgrade an Internet-based distributed measurement and control (DMC) system.
In this paper we present a model that enables us to separate the control rules
from the embedded systems, besides assigning to each of it an IP address that
allows interconnections and collaboration between them. The model takes the
NIST-DMC model and assigns over it a Business Layer, which is responsible to
handle the interface with authorized users, who manage a set of control rules
both dynamically as remotely. When a user modifies a rule, the Business
Manager informs all the digital system involved that they must start to do
some things in a different way. By separating the control of the devices, the
proposed model provides a broad longevity to the components of digital systems
that implement it, provides greater flexibility to adapt the response of the
devices with changing administrative interests, and promises a decrease in
costs maintenance, since it reduces the need to modify the software embedded
in the control device.
Keywords: Dynamics rules,
distributed control, embedded systems, NIST-DMC, greenhouse automation
Title of the Paper: Flood Level
Indicator and Risk Warning System for Remote Location Monitoring using Flood
Observatory System
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Authors: Siva Kumar
Subramaniam, Vigneswara Rao Gannapathy, Sivarao Subramonian, Abdul Hamid
Hamidon
Abstract: Flooding is a great treat towards mankind as it is also considered
one of the most devastating natural disasters in the world. Flooding is not
any abnormal scenario worldwide, since flooding results in great damages to
agriculture land, residential area and even cities with high cost in lives and
towards the economy of the country. The government has to spend tons of money
in flood mitigation plans in afford to help the victims and also to reduce the
number in the long run. Most of the flood mitigating plans has high cost and
only can be implemented base on priority. Baring the cost and safety measures,
this paper highlights the Flood Observatory System (FOS) as a warning and
alert system to efficiently monitor the critical flood prone areas in real
time basis. FOS can be deployed in flood prone areas in afford to create a
well-used standard for remote flood observation systems. The ability to
receive real time information on flood level empowers both government and
private organizations to react to imminent danger in an effective manner. With
the real time flood information, allows public safety organizations and other
emergency managers to effectively plan their resource deployment within the
limited time of alert. Warning as flood rises could be used to save life’s and
properties in many ways can help such organization and government to spend
sufficient amount of money in restoration process. The simple and practicality
of a system should be useful in all means towards mankind.
Keywords: Flood
Observatory System, flood mitigation plans, wireless sensor, programmable
logic controller
Title of the Paper: Evolutive Neural
Fuzzy Filtering: An Approach
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Authors: J. C. Garcia
Infante, J. J. Medel Juarez, J. C. Sanchez Garcia
Abstract: The paper, is a description of the evolutive neural fuzzy filtering
with real time conditions, giving the basics of its operation based on a back
propagation fuzzy neural net, which adaptively choose and emit a decision
according with the reference signal changes in order to loop the correct new
conditions for a process. This work is an approach about the operation of the
evolutive neural fuzzy digital filters (ENFDF). Using the neural fuzzy
mechanism select the best parameter values into the knowledge base (KB),
updating the filter weights to give a good answers with respect to the desired
signal in natural linguistic sense. Additionally, the filtering architecture
includes a decision making stage using an inference into its structure to
deduce the filter decisions in accordance with the previous and actual filter
answer in order to updates the new decision with respect to the new reference
system conditions. The process requires that all of its states bound into
ENFDF time limit as a real time system. In this paper, the characterization of
the membership functions building the knowledge base in a probabilistic way
with respect to the rules set in order to describe the reference system and
the inference to selects the new filter decision. Moreover, the work describes
in schematic sense the neural net architecture with the decision-making stages
in order to integrate the filtering stages as an evolutive system. The results
expressed in formal sense using the concepts into the paper references.
Finally, we present the simulation of the ENFDF operation using the Matlab©
software. The paper has eight sections conformed as follows: 1. Introduction,
2. Filter description, 3. Neural net structure, 4. Decision stage, 5. Rules
strategy, 6. Real time constrains, 7. Simulations, 8.Conclusion and
References.
Keywords: Digital filters,
neural net, evolutive systems, fuzzy logic, inference mechanism, real time
Title of the Paper: Measurement
Assisted Robotic Edge Deburring of Aero Engine Components
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Authors: Nirosh
Jayaweera, Phil Webb
Abstract: Aero engine components are often subjected to high stress levels and
vibrations during operation. The mechanical integrity of these machined
components may be compromised by the presence of burrs and sharp edges.
Therefore the removal of burrs and the creation of rounded edges is necessary.
To do this manually is time consuming and costly and may have potential
quality issues. The application of robots to deburring has been limited by the
difficulties in achieving the required degree of quality, controlling reaction
forces during metal removal and the lack of tooling designed specifically for
robots. The work presented in this paper introduces an efficient robotic
deburring method, which is developed based on generation real-time robotic
deburring path. The approach uses an in-process measurement sensor to
determine the component’s exact location prior to the deburring operation. The
core of the system is a set of algorithms capable of fitting and generating
the required robot path relative to the feature to be profiled. Reducing the
reliance on accurate dedicated part holding fixtures and uses laser guided
robot ensures the developed deburring system is highly flexible and
re-configurable. The paper describes the development of deburring process for
a simple straight edge feature and its application to more complex ones. The
algorithms were evaluated using representative test pieces made from Titanium,
RR1000 and super CMV alloys using a spindle attached to an industrial robot.
Keywords: Aero-engine
components, ‘best-fit’ algorithms, measurement assisted deburring, robotics,
sensor
Title of the Paper: Improvement of the
Machine Tools Performance
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Authors: Marin Doina
Abstract: Machine tools performance from the point of view of compliance to
tolerance, surface definition etc, is determined essentially by the dynamic
and static accuracy of machine movement. This paper presents the dynamic
behavior analyses for a vertical milling machine during milling process or
without load. The experimental research shows vibrations transmission to the
mechanical components of machine tool and theirs influence upon cutting
process. In the same time, there are analyzed the evaluative factors of feed
drive systems: geometrical errors, contour errors, stability of the cutting
process, resonance frequency and structural deformation error, performances of
the control system.
Keywords: Ball-screw, high
speed machining, motion accuracy, contour errors, feed drive system,
trajectory measurement, machine structure
Issue 4, Volume 5,
April 2010
Title of the Paper: Possibilities of
Implementing a Monitoring System for Road Transport using a Dimensions Basis
Approach
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Authors: Stela Dinescu,
Anamaria Giurgiulescu
Abstract: In nowadays, the development of production force and the sharpening
of labour division, the development of production and the movement of goods,
have conducted to the enhancement of resources and ways of transportation,
which have become internal elements of a global transportation system.
Romania, due to its geographical position, is situated at the intersection of
communication ways that links north and south, and east to the west of Europe.
This means an important benefit related to the transportation. However, in
order to ensure an adequate transportation system, Romania has to create a
proper infrastructure for all transportation ways. Because roads represent one
of the most important transportation ways that has recorded a signified
enhancement during the past 100 years, a modern infrastructure, at European
standards, is needed. The study proposes a solution with a punctual approach
(refers to a transportation way) for watching the traffic flow on the main
national roads using a monitoring system, which can be extended through
telecommunications systems and becoming a system with a global traffic flow
image. Gathering traffic flow information leads to fundamental decisions to
improve Romanian auto transportation condition.
Keywords: Vehicle,
ultrasound transducers, transfer characteristic, monitoring, auto traffic, and
traffic flow
Title of the Paper: A New Approach in
Mobile Robot Fault Tolerant Control. Minimizing Costs and Extending
Functionality
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Authors: Cristian Axenie
Abstract: Today’s trends in control engineering and robotics are blending
gradually into a slightly challenging area, the development of fault tolerant
real-time applications. Hence, applications should timely deliver synchronized
data-sets, minimize latency in their response and meet their performance
specifications in the presence of disturbances and faults. The fault tolerant
behavior in mobile robots refers to the possibility to autonomously detect and
identify faults as well as the capability to continue operating after a fault
occurred. This paper introduces a real-time distributed control application
with fault tolerance capabilities for differential wheeled mobile robots.
ARTEMIC combines the power and flexibility of real-time open-source software,
the robustness of nonlinear control schemes, the efficiency of Kalman
filtering and the extensibility of high-level programming languages for
hardware interfacing. Specific design, development and implementation details
will be provided in this paper.
Keywords: Mobile Robotics,
Fault Tolerant Control, Sliding Mode Control, Extended Kalman Filter, Real
Time Linux, Distributed Control, Grafcet
Title of the Paper: Study Regarding the
Possibilities of Improving the Parameters of a Petroleum Products Main Pipe
Transport System
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Authors: Andrei Magyari,
Marin Silviu Nan, Florin Dumitru Popescu, Nicolae Buda
Abstract: Main pipe flow control of petroleum products transport systems
represent an important problem on which the efficient operation of the system
depends considering the process imposed requirements respectively the final
consumer. As more precise flow control is, realized with a sufficient reaction
speed, as more enhanced the energetic parameters and economic performance get.
Considering an automated control the problem of optimal process operation may
appear having either the minimum specific energy consumption or minimum
expenses per unit of transported product related to the distance as a
performance indicator. Either the resistive method (regulation valve) or
changing the speed of the speed of the centrifugal pump (if used) may be used
to control the flow of the transported fluid though main pipes. The
development of new petroleum products main pipe transport installations, in
order to find the optimum choice concerning their architecture and structure,
supposes the modeling and simulation of the considered system. Simulation
allows the generation, evaluation of instances and establishes the best
solution based on performance indicators which most of the times identify with
the definitive indicators of the simulated system. Simulation may be applied
as well to studying petroleum products main pipe transport systems already in
operation. The results of the simulation for this case emphasizes the
objectives to be met within the modernization processes and the weak spots of
the system ensuring the solving of problems if investments are implied for
their modernization or if it is more efficient to increase expenditures for
their maintenance.
Keywords: Centrifugal
pump, mathematical model, flow regulating process, main pipe
Title of the Paper: Development Objects
and Algorithms Required to Implement a New Method of Access Control to
Physical Resources, based on Qualifications
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Authors: Daniela Cristea,
Octavian Prostean, Thomas Muschalik, Ovidiu Tirian
Abstract: This paperwork presents a distributed system to be used for
implementing a new method for the access control to physical resources, along
with the mode to implement various development objects required, and the
algorithms used for encoding and decoding the access right. This access
control method, described through the QBAC pattern, is going to be used by the
employees of a company to access the inputs of any machines, based on the
qualifications (abilities) they dispose of.
Keywords: Distributed
system, authorization, access control, security, SAP NetWeaver platform,
qualification
Title of the Paper: Developing IEC61499
in Industrial Processes, Measurement and Control Systems (IPMCS)
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Authors: Maryam Sadeghi
Abstract: Increasing marketing competition with globalization force companies
to expand diversity of the production lines which in turn improve the ability
of choosing customizable products, improve the flexibility of system design
and maintenance costs lead to a strong trend towards automation and
distributed control systems. The plant is constantly adapted to the
differences of products to achieve the highest production quality in a
shortest possible time and so the automatic control have to be adapted,
developed and upgraded based on changes in the plant conditions. Traditional
production has typically relied upon a PLC as a Centralized hierarchy of
Programmable Logic Controllers which is usually fixed or “hard-wired”. For
developing the system it should be shut-down and completely rewired which
leads to a high cost and time consumption may last at least several weeks in
often cases in production process. A new design methodology with open
architecture for modeling industrial control systems has been developed. New
international standard “IEC 61499”, defines event driven functional modules
called function blocks which can be distributed to field devices and
interconnected across multiple controllers. It used for intelligent and agile
control with more Portability, interoperability and configurability adds the
system flexibility by adaption and reconfiguration basing on environment
changes. It can be used for reducing the cost and complexity of industrial
automation process. In this approach IEC61499 Function Blocks concept,
Function Block Development Kit (FBDK), Function Block Run Time Environment (FBRT),
Netmaster and Automatic Iron Cutting Device using IEC61499 FBs Editor will be
discussed.
Keywords: IPMCS , DCS,
PLC, IEC 61499, Function Block, FBDK, FBRT, Netmaster, JVM, SIFB
Title of the Paper: Economic Load
Dispatch Using Improved Harmony Search
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Authors: T. Ratniyomchai,
A. Oonsivilai, P. Pao-La-Or, T. Kulworawanichpong
Abstract: This paper presents the use of the improved harmony search method
for solving economic load dispatch problems. The harmony search method mimics
a jazz improvisation process by musicians in order to seek a fantastic state
of harmony. To assess the searching performance of the proposed method, a
six-unit thermal generating system acquired from the standard IEEE 30-bus test
system was challenged. Satisfactory results obtained from the proposed method
were compared to those obtained by genetic algorithms, evolutionary
programming, adaptive tabu search and particle swarm. Also, effects of
valve-point loading units were included and discussed.
Keywords: Economic
dispatch, genetic algorithms, evolutionary programming, adaptive tabu search,
particle swarm optimization
Issue 5, Volume 5,
May 2010
Title of the Paper: Automatic
Regulation Time Series for Sampled-data Feedback Control Systems with Limited
Control Inputs
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Authors: Tain-Sou Tsay
Abstract: In this literature, a new nonlinear digital controller is proposed
for analyses and designs of sampleddata feedback control systems. The
controller is derived from the converging characteristic of a specified
numerical series. The ratios of neighbourhoods of the series are formulated as
a function of the output of the plant and the reference input command, and
will be converged to be unities after the output has tracked the reference
input command. Limitation of the series can be applied to get better
performance. Two kinds of servo system, a time-delay system, one very high
order system and a 2x2 multivariable aircraft gas turbine engine are used to
illustrate effectiveness of the proposed nonlinear digital controller.
Comparisons with other conventional methods are also made.
Keywords: Time series,
Nonlinear control, Sampled data feedback control system
Title of the Paper: Experimental
Verification of Design Methods for Conventional PI/PID Controllers
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Authors: Radek Matusu,
Roman Prokop
Abstract: The paper presents an experimental verification of conventional PI
and PID controller design methods. Nine different synthesis techniques were
used to control of airflow speed in laboratory model of hotair tunnel, most of
them for both PI and PID version. In the first instance the controlled plant
was identified in order to obtain a linear mathematical model and then the
controllers were designed using studied methods. The controllers were tested
in simulations and subsequently implemented under real conditions. The
obtained control results have been compared and analyzed.
Keywords: Control Design
Methods, PID Control, Linear Control, Hot-Air Tunnel, Identification
Title of the Paper: Acoustic
Positioning System for Compact Underwater Vehicle
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Authors: Kosei Shimoo,
Yutaka Nagashima, Takakazu Ishimatsu
Abstract: Currently a platform to investigate the underwater environment is
required. In this paper, we propose an autonomous underwater vehicle (AUV)
with an accurate positioning system. The positioning system is developed to be
accurate enough to utilize the superior navigation ability of our AUV feature.
The navigation ability is acquired by the variable vector propeller mechanism.
The accurate positioning became possible by introducing two acoustic signals
with different frequencies. The range data were obtained satisfactorily with
maximum error less than 0.006m. Using the positioning system, the navigation
trajectory of the AUV could be measured.
Keywords: Autonomous
underwater vehicle (AUV), Acoustic positioning system (APS), Ultrasonic,
VARIVEC propeller, PLD, Marine investigation
Title of the Paper: Optimal Switching
Function Discrete Sliding-mode Control Based on Unmatched Uncertainties States
Observer
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Authors: Shen Yu, Ma
Bo-Yuan, Du Jin-Xin, Duan Xue-Chao
Abstract: For a class of discrete unmatched uncertain systems with
incompletely measured states, a stable closed-loop sliding-mode control method
based on the unmatched uncertain states observer is proposed. The output error
feedback matrix is obtained by transformation of uncertainties state equation
and solving the linear matrix inequalities(LMI). The stability of the states
observer is proved. A reaching-law sliding-mode controller is presented for
this discrete system by employing the results of the observer. To enhance the
stability of the reaching-law sliding-mode controller, the stability margin is
defined by using the min-max eigenvalue ration method. By deducing the min-max
Lyapunov difference function, solving linear programming and optimizing the
switching function, the closed-loop sliding-mode controller can get the
maximum stability margin. The simulation results show the effectiveness of the
proposed control method.
Keywords: Discrete system,
unmatched uncertainties states observer, reaching-law slide mode controller,
stability margin
Title of the Paper: Control of the
Permanent Magnet Synchronous Motor Using Model Reference Dynamic Inversion
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Authors: Zhang Yaou,
Zhao Wansheng, Kang Xiaoming
Abstract: Worldwide energy-saving emission has stimulated extensive
application of permanent magnet synchronous motor in industry. This work is a
contribution to velocity control of the permanent magnet synchronous motor.
The model of the permanent magnet synchronous motor has multi-variable, highly
nonlinear, strong coupling character with external load; in order to control
this complicated nonlinear model, the hierarchy model reference dynamic
inversion control method has been developed. Based on the band of the
different variables of the system, the control system can be divided into long
period control loop and short period control loop. The model reference dynamic
inversion method is proposed as the kernel controller in different loops.
Based on the desired closed loop reference model, the open loop controller can
be designed for the long period loop and short period loop respectively, and
this open loop controller can make the response of the system the same as that
of the reference model. Comparing with the traditional control method, this
model reference dynamic inversion control method combine the virtues of the
model reference controller with that of the dynamic inversion controller, and
this method is a fully nonlinear control method in essence, which can avoid
linearization error when using the approximate linearization controller and
the problem of the parameter tuning when utilizing the traditional PI
hierarchy controller. Finally, the simulation experiments have been set up and
the simulation results have illustrated that this control method can control
the permanent magnet synchronous motor stably and successfully.
Keywords: Permanent Magnet
Synchronous Motor (PMSM), Dynamic Inversion (DI), Velocity Tracking Control,
model reference, hierarchy controller
Title of the Paper: Design of Fuzzy
Logic Power System Stabilizers in Multimachine Power System using Genetic
Algorithm
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Authors: Manisha Dubey,
Nikos E. Mastorakis
Abstract: This paper presents an approach for the design of fuzzy logic power
system stabilizers using genetic algorithms. In the proposed fuzzy expert
system, speed deviation and its derivative have been selected as fuzzy inputs.
In this approach the parameters of the fuzzy logic controllers have been tuned
using genetic algorithm. Incorporation of GA in the design of fuzzy logic
power system stabilizer will add an intelligent dimension to the stabilizer
and significantly reduces computational time in the design process. It is
shown in this paper that the system dynamic performance can be improved
significantly by incorporating a genetic-based searching mechanism. To
demonstrate the robustness of the genetic based fuzzy logic power system
stabilizer (GFLPSS), simulation studies on multimachine system subjected to
small perturbation and three-phase fault have been carried out. Simulation
results show the superiority and robustness of GA based power system
stabilizer as compare to conventionally tuned controller to enhance system
dynamic performance over a wide range of operating conditions.
Keywords: Dynamic
stability, Fuzzy logic based power system stabilizer, Genetic Algorithms,
Genetic based power system stabilizer, Power system stabilizer
Title of the Paper: A Novel
Disturbances Compensating Dynamic Positioning of Dredgers Based on Adaptive
Dynamic Surface Control
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Authors: Yuhua Zhang,
Jianguo Jiang
Abstract: In order to deal with the control difficulties of the dredger’s
dynamic positioning system under large disturbances and severe sea conditions,
an adaptive dynamic surface control method is proposed to be used in the
dredger’s dynamic positioning system. Disturbances can be estimated and
compensated by adaptive arithmetic. The addition of low pass filters in
backstepping design process allows the dynamic surface control technique to be
implemented without differentiating any model nonlinearities, which could
simplify the design significantly. The proposed adaptive robust controller
guarantees the semi-globally asymptotical stability of the closed-loop system,
and output asymptotic track to desired trajectory. Besides, the final tracking
accuracy could be adjusted via certain controller parameters. This scheme is
verified by the comprehensive simulation results in typical operation
scenarios. The simulation results show that the proposed controller has
desired position tracking transient performance and robustness to the
uncertain disturbances.
Keywords: Dynamic
positioning (DP), Adaptive dynamic surface control(ADSC), Nonlinear controller
design, Backstepping, Dredger, Disturbances compensating
Title of the Paper: A Study on
Electromagnetic Driven Bi-Disc Compensator for Rotor Auto-Balancing and its
Movement Control
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Authors: Chen Li-Fang,
Cao Xi, Gao Jin-Ji
Abstract: A high-speed rotor system can be very sensitive to rotating mass
unbalance which is harmful to rotating machinery. Therefore, many kinds of
balancing device were created to reduce vibration in high-speed rotor system.
In an electromagnetic driven balancing system, rotor unbalance is online
identified and calculated by electromagnetic compensator, and then the
balancing discs will be moved to the best compensating positions and the
unbalance can be suppressed or eliminated. Unfortunately, industrial
application using auto-balancing technology is limited by its long transition
time and transient vibration enhancement. To solve these deficiencies on
compensator movement control, a bi-disc freely rotation strategy was
established and the solutions of two special cases were also given out. A test
rig of electromagnetic driven bi-disc free rotation rotor auto-balancing
system was established. Experiments using the new control strategy on this rig
showed that the compensator could be moved faster and more accurate. At the
meantime, the balancing time was reduced, and more important, enhancement on
transient vibration was avoided.
Keywords: Electromagnetic
driven compensator; Balancing disc; Movement control; Rotor auto-balancing
system
Title of the Paper: Exploration with
Two Cooperating Mobile Robots
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Authors: Mohammad Al
Khawaldah, Salvatore Livatino, Lily Meng
Abstract: In this paper a new exploration algorithm using two cooperating
robots is introduced. The new technique is a combination of wall-following
exploration algorithm and frontier-based exploration algorithm. Furthermore,
robots sweep the line-of-sight between them continuously; if they can see each
other then the area between them is assigned as free. The aim is to decrease
the exploration time and energy consumption. The proposed algorithm is divided
into two stages: Firstly, one of the robots follows (detects) the entire of
the environment walls. And secondly, they employ frontier-based algorithm to
complete exploring the remained unexplored areas. During these two stages, the
robots sweep the line-of-sight between them in each step to maximize the
exploration efficiency.
Keywords: Cooperating
robots, Exploration, Line-of-Sight, Wall following, frontiers, Map building
Title of the Paper: Combining a
Recurrent Neural Network and a PID Controller for Prognostic Purpose: A Way to
Improve the Accuracy of Predictions
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Authors: Ryad Zemouri,
Rafael Gouriveau, Paul Ciprian Patic
Abstract: In maintenance field, prognostic is recognized as a key feature as
the prediction of the remaining useful life of a system which allows avoiding
inopportune maintenance spending. Assuming that it can be difficult to provide
models for that purpose, artificial neural networks appear to be well suited.
In this paper, an approach combining a Recurrent Radial Basis Function network
(RRBF) and a proportional integral derivative controller (PID) is proposed in
order to improve the accuracy of predictions. The PID controller attempts to
correct the error between the real process variable and the neural network
predictions.
Keywords: Maintenance,
prognostic, error of prediction, neural network, RRBF, PID
Title of the Paper: Integration of
Information Technology and Automation: Facilitators and Barriers
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Authors: Claudia Tomie
Yukishima Zuge, Sergio Luiz Pereira, Eduardo Mario Dias
Abstract: Information Technology (IT) should effectively assist business
strategies of companies, being a crucial factor for success. The difficulty of
integration has brought software providers to develop integrated solutions to
provide a common user interface and data management system. These Systems are
referred as Manufacturing Execution System (MES). Automation Technology (AT)
includes all hardware and software of an automated industrial plant, which
includes Programmable Logic Controllers, Industrial Networks, Supervisory
Systems, and all software licenses necessary to run the system. The
integration of IT with AT provides data from the ground-floor to the
management level of enterprises. Owing to the advance of technology, hardware
and software architecture, automation systems enable the acquisition of a huge
quantity of information that can assist in decision-making of companies.
ntegration models are presented, along with the main facilitators and barriers
of the integration between IT and AT and suggestions for future work in this
area.
Keywords: Information
technology, automation technology, MES, automation and enterprise integration
Issue 6, Volume 5,
June 2010
Title of the Paper: AVL
System Integration with RFID for the Optimization of Cargo Transportation
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Authors: Decio Tomasulo
De Vicente, Marcelo Jose Maluf Garcia, Silvio Giuseppe Di Santo, Eduardo Mario
Dias
Abstract: The aim of this paper is to describe and evaluate the integration of
different technologies such as RFID, in order to improve road transport and
distribution of cargo, resulting in a decrease or even mitigation of damages
involved in current logistics processes. The advantage of using AVL integrated
with RFID technology is shown by comparing with the current model of the
logistics process for supply of goods, which can be seen the greatly simplify
and security achieved.
Keywords: AVL, RFID,
logistic process, fractioned cargo
Title of the Paper: A
Study on the Available Biometric Technologies Used in Order to Control
Security in Physical Access
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Authors: Ricardo Janes,
Augusto F. Brandao Jr, Eduardo M. Dias
Abstract: The control of the physical access in automated security systems,
like banks, ports, airports and military areas, is essential to guarantee the
financial security of the institutions and to prevent to the possibility of
accomplishment of terrorist acts. To this, a lot of technologies used in
security systems can be used, but the choice of a technology depends on some
factors, as the level of security related with the financial value to be
protected, the entailed cost to the technology implementation related to the
level of offered security, and the physical characteristics to the proper
installation. This work aims to present the main characteristics of the
biometric technologies used currently in the control of physical access,
therefore the biometry is known as the measurement technique more insurance
currently in the identification of a person. The susceptibility to fraud,
involved costs to implementation and installation of the biometric devices,
advantages and disadvantages of each technology will be presented in this
work. Some technologies have low costs for the implantation, but its use has
low acceptance in some countries. Others have high trustworthiness but the
cost becomes the prohibitive equipment. This work presents a relation
cost-benefit, so that the choice of the technology can be made taking in
account the involved cost and the degree of security of the technology to be
used.
Keywords: Biometric
technology. Biometry. Access Control. Smart buildings. Security systems
Title of the Paper: A
Novel Well Conditions Analysis Method through SFPI Algorithm
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Authors: Zhenhua Sun,
Xuemin Tian
Abstract: Through reviewing the popular time-frequency analysis methods of
signals, this paper proposed a novel method with specific frequency polar
images (SFPI) to process the electrical signals from beam-pumping unit motor
due to the weakness of phase analyzing ability of the general time-frequency
analysis methods. And the fundamental concept of the SFPI was defined. This
method acquires the time-frequency distribution and phase information of
signals by projecting them to a specific frequency polar. And through the
dynamic tracks in the polar cycle, the time-frequency information was showed
clearly. The SFPI was used to analyze the well conditions through motor
electric signals. Finally, the characteristics of this method were concluded.
And the direction of future works was assigned.
Keywords: Well conditions,
Beam-puming unit, Dynamometer, Time-frequency, Specific frequency polar images
Title of the Paper: Using
Data Mining Techniques for Development Expert Systems Equipped with Learning
Capabilities for Use in Automated Industrial Plants
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Authors: Alexandre
Acacio De Andrade, Sergio Luiz Pereira, Eduardo Mario Dias, Caio Fernando
Fontana
Abstract: The use of expert systems gained importance with the growing amount
of data that the current plants generate automated, in this paper, the
development and tests of a specialist system based on data mining and that
possesses the learning capacity is presented. The referred system was termed
as NESISES (Neural System of Integration for Supervisory and Expert Systems).
It operates in real time with industrial automation supervisory systems and
whose aim is to minimize the frequent knowledge engineering procedures for
constantly updating the base of knowledge of an Expert System (ES). NESISES
was validated in both the laboratory as well as in an automation plant.
Keywords: Data Mining,
Machine learning, Industrial Automation, Supervisory and Specialist Systems -
Interconnection
Title of the Paper: Proposal
of a Information System Guided To Administration of Hydric Supply Systems
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Authors: Fabricio Ramos
Da Fonseca, Eduardo Mario Dias, Sergio Luiz Pereira, Caio Fernando Fontana
Abstract: This work offers a practical vision about the application of
automation technologies in systems of sanitation and has as objective to
expose solutions guided to the management of hydric supply systems. These
automated systems are characterized mainly by the necessity of acquisition and
information sending of one or more operational control centers to remote
stations located in the most several locations as: densely urbanized centers,
non urban areas, restricted access places, coastal areas, port areas,
underground places and high topography places. This diversity of
characteristics demands a group of automation, supervision and administration
of information solutions to the control and the administration of the supply
system in an integrated and efficient way.
Keywords: Management
systems, enterprise resource planning, hydric supply systems
Title of the Paper: Security
Logistic Chain Process - Methodology for the Implementation
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Authors: Eduardo Mario
Dias, Caio Fernando Fontana, Sergio Luiz Pereira
Abstract: The development of the Methodology for the Implantation of the
Processes of the Safe Logistic Chain aims at to establish parameters and
methodology for application of the diverse concepts and programs of security
for the foreign commerce being aimed at the load control that come being
implemented for agencies of government and international organisms. The
implementation of this model will provide to an increase of productivity of
the sector therefore the adoption of measures of load control demands that the
planning of the logistic operations is effected, followed and corrected
whenever necessary.
Keywords: CSI, Safe
logistic chain, Security, Electronic seal, Tracking
Title of the Paper: Experimental
Implementation of Smart Glove Incorporating Piezoelectric Actuator for Hand
Tremor Control
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Authors: S. Kazi, A.
As'Arry, M. Z. Md. Zain, M. Mailah, M. Hussein
Abstract: This paper examines the effectiveness of a glove specifically
designed to compensate human hand tremor by incorporating a type of
piezoelectric actuator. In this paper, the experimental results are divided
into two parts involving actual human hand tremor and model hand-arm tremor.
Both experiments were done using same measurement equipments, experimental
setup and programming to evaluate the effectiveness of the glove in reducing
the hand tremor. The initial experiment was done by measuring human hand
tremor to determine the coherence frequency while other was performed on a
hand-arm model with artificial vibration exciter to validate the response of
the actual hand tremor. A number of selected sample frequencies were chosen
for the experiment. Next, a piezoelectric actuator was employed as the main
active element for the compensation of the tremors in both systems. The
results presented both in time and frequency domains show that most tremors
are readily suppressed to demonstrate the effectiveness of the proposed
systems. They are considered as useful data that can be used for further
investigation into the technique of effective human hand tremor suppression,
particularly applicable to patients suffering from uncontrollable shaking or
trembling such as in Parkinson’s disease, white hand syndrome, etc.
Subsequently, the output of this investigation can be also used to assist in
developing advanced control strategies that involve the generation of
controlled signals as the input for the piezoelectric actuator or other
similar device to suppress the hand tremor. The presented system is notable
for simplicity and low cost.
Keywords: Human hand
tremor, Smart glove, Piezoelectric Actuator
Title of the Paper: Design
of Fault Tolerant Flight Control System
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Authors: Emre Kiyak,
Fikret Caliskan
Abstract: The purpose of the paper is to present an approach to detect,
isolate and accommodate the sensor or actuator faults using bank of observer
and unknown input observers (UIO). Full order observers, reduced order
observers, unknown input observers and Kalman Filter are widely used in state
estimations [1]. After the estimation of states, fault detection and isolation
can be provided by conducting residual analysis. Despite the existence of
unknown inputs, fault detection and isolation is implemented for a very large,
four-engined, cargo jet aircraft model. Sensor accommodation is realized via
switching under redundant sensor existence assumption. Actuator accommodation
is provided by gain scheduling. Hence, if a fault occurs in an actuator
corresponding to the control surfaces, the remainder (n-1) actuators are used
to avoid hazardous flight regime. Sensor or actuator faults are detected by
using residuals. Sensor faults are effective on the outputs while actuator
faults are effective on the state equations. Fault isolation is implemented by
taking into account that each residual is sensitive to all of the other faults
but one fault. Fault detection, isolation and accommodation are shown to be
functional through the simulations.
Keywords: Fault detection,
isolation, accommodation, fault tolerant flight control, observer and unknown
input observers
Title of the Paper: Optimal
Size of Kanban Board in a Single Stage Multi Product System
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Authors: T. Murino, G.
Naviglio, E. Romano
Abstract: The aim of this paper is to define a methodology for determining the
optimal size of the supermarket (between two workstations) through the
optimization of the number of kanban in a kanban board. It also identifies
some production parameters that greatly influence the optimal size of a kanban
board. The approach chosen is the building of a simulation model of a single
stage multi-product system with Arena, while OptQuest has been used for the
next optimization phase.
Keywords: Supermarket pull
system, kanban board, DES, simulation and optimization, data analysis
Title of the Paper: PI-Type
Fuzzy Controllers for Mobile Satellite Antenna Control System Design with
Tracking Loop Gain Parameter Variations
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Authors: Jium-Ming Lin,
Po-Kuang Chang
Abstract: This research applied Proportion and Integration (PI) type fuzzy
methods for mobile satellite antenna control system design. The detailed block
diagram of a satellite antenna tracking system is very lousy; it is very
difficult to obtain the key parameters for analyses and simulation. Thus a
simplified model of antenna pitching or yawing control system is applied to
speed up the design and obtain the key parameters. Firstly, the antenna
tracking and the stabilization loops were designed according to the
traditional bandwidth and phase margin requirements. However, the performances
would be degraded if the tacking loop gain is reduced due to parameter
variations. On the other hand a PI-type fuzzy controller was also applied for
tracking loop design. It can be seen that the system performances obtained by
the fuzzy controller were better for both lower and higher antenna tracking
loop gains, and the tracking loop gain parameter variations effect can be
reduced.
Keywords: Antenna tracking
loop, stabilization loop, PI-type fuzzy controller, PI compensator
Title of the Paper: Integration
both PI and PD Type Fuzzy Controllers for a Scanning Probe Microscope System
Design
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Authors: Jium-Ming Lin,
Po-Kuang Chang
Abstract: This research is to use a Proportion and Integration (PI) as well as
a Proportion and Derivative (PD) type of fuzzy controllers to reduce the
hysteresis effect of a force actuator for a Scanning Probe Microscope (SPM).
This improvement has been verified by MATLAB simulation and practical
implementation to reduce the hysteresis effect of the force actuator.
Comparisons with the previous designs with and without Linear Velocity
Transducer (LVT) for inner-loop feedback compensation are also made. Thus the
new design is cheaper and valuable.
Keywords: PI type fuzzy
controller, PD type fuzzy controller, SPM, Force actuator, Hysteresis effect
Issue 7, Volume 5,
July 2010
Title of the Paper: A
Study for Destination of Solid Wastes from Vessels
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Authors: Carla M.
Maccagnan Fontana, Maria Lidia Dias, Eduardo Mario Dias, Sergio Luiz Pereira
Abstract: Everyday humans around the globe perform a series of activities
that, in addition to the final product concerned, results in a significant
number of solid waste, commonly called "junk." These solid wastes not treated
to an appropriate final destination will be fatefully converted into
pollutants causing a variety of environmental, economic and social problems.
Particularly, the Brazilian legislation, in accordance with international
treaties, adopted as one of the methods to prevent the realization of the
potential damage of the waste generated on board the ship’s obligation to
deliver its solid waste to the administration of the local port. However,
managing solid waste is still a challenge for Brazilian ports as most of them
lack the means to make the classification, collection, treatment and final
disposal of waste generated. It is therefore extremely necessary to invest in
measures to manage the negative effects and prevent the realization of their
potential environmental damage as well as combating illegal practices, such as
smuggling and trafficking drugs. Though this can not involve undue delay to
ships making use of their facilities.
Keywords: Solid waste
management; Scanning; Tracking; Monitoring; Oceanic pollution
Title of the Paper: A
Direct Linear Solution With Jacobian Optimization to AX=XB for Hand-Eye
Calibration
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Authors: Mao Jianfei,
Tian Qing, Liang Ronghua
Abstract: A linear closed-form solution followed by Jacobian optimization is
proposed to solve AX=XB for hand-eye calibration. Our approach does not
require A,B satisfying rigid transformation rather than the classic ones based
on quaternion algebra or screw rule. We firstly give the detailed proof of the
optimal orthonormal estimation for an arbitrary scale matrix. With the
theorem, a linear closed solution based on singular value decomposition (SVD)
and the rule of optimal rotation estimation, is presented, followed by the
nonlinear optimization with the proposed Jacobian recursive formula. Detailed
deduction and demonstration are given based on matrix theory. Since our
approach is applicable for non-rigid transformation rather than the classic
ones, our technique is more flexible. Plenty of computer simulation and real
data implementation indicate that: (1) In computation of initial value, our
technique has higher precision and more robustness. (2) As more equations are
added, initial value will converge to final value gradually, which shows it
credible to regard initial value as final solution when many equations are
supplied.
Keywords: Closed-form
solution, Jacobian optimization, Hand-eye calibration, Orthonormal estimation,
SVD
Title of the Paper: The
Modernization of the Public Service Using Information Technology
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Authors: Valter Luiz
Vendramin, Eduardo Mario Dias
Abstract: The use of information technology with modern tools is absolutely
necessary in the new scenario of administration. Modern administration
requires efficient tools to perform information management that allows for
speed in its collection, tabulation, and analysis and that enables the manager
to make decisions to solve problems or even prepare government programs. The
association between modernization and traditional concepts of information
technology and other areas of science are increasingly required for the
conduction of the public manager’s works to reach the set goals.
Keywords: Automation,
Education, Public Service, IT, Modern Tools, Public Management
Title of the Paper: Modelling
and Simulation of Traffic Lights on Road Intersections
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Authors:
Marius-Constantin Popescu, Nikos E. Mastorakis, Jean-Octavian Popescu
Abstract: This paper aims to achieve a program that operates the traffic light
of intersections with TwidoSoft programming language. The order of priority
between traffic rules is implemented in machine specific language TwidoSoft.
At the end of this paper is a simulated traffic congestion situation.
Keywords: Modeling and
Simulation, PLC Twido, Programming, Ladder
Title of the Paper: A
Convex Optimization Approach to GPS Receiver Tracking Loop Design
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Authors: He-Sheng Wang
Abstract: In this paper, the application of convex optimization theory to GPS
(Global Positioning System) receiver tracking loops is investigated. We design
an H? controller for the receiver tracking loop based on an LMI (Linear Matrix
Inequality) approach. The H? controller is particularly attractive because it
is a robust design in the sense that small disturbances lead to small tracking
errors. Furthermore, it easily accommodates the inclusion of plant
uncertainties as part of the plant model. By adding unstructured or structured
perturbations to the plant model, it is possible to design controller that
ensure stability robustness and performance robustness of the closed-loop
system. In order to apply the H? optimal design, we first rewrite the GPS
receiver tracking loop into a two-input two-output generalized plant model,
and then the H? controller is design by using an LMI approach. The LMI is a
convex optimization problem in which a local solution is guaranteed to be a
global minimizer. By using a software-based GPS L5 signal generator, various
levels of disturbances are derived as test inputs to evaluate the performance
of the resulting tracking loop.
Keywords: GPS, Linear
Matrix Inequality, Convex Optimization, H? Control, Delayed-Lock Loop
Title of the Paper: Planning
and Control of a Hybrid Vacuum-Forming System Based on Screw-pin Tooling
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Authors: Zhijian Wang,
Yan Wang, Nabil Gindy
Abstract: This paper introduced planning and control of a hybrid
vacuum-forming machine system (HAVES). The HAVES was developed to integrate
CAD/CAM, screw-pin tooling, CNC, vacuum forming and optical measurement device
together to produce vacuum forming components. The screw-pin tooling was
employed to replace traditional dedicated solid tooling and its
reconfigurability provided the HAVES with advantages in rapid producing small
batch and mass customization products. The whole control system of the HAVES
is divided into two parts: one for screw-pin tooling adjustment and machining
by using CNC control, and the other for vacuum forming by using PLC control.
The detail design of the control system was discussed.
Keywords: Vacuum forming,
Control system, Reconfigurable tooling, Screw-pin tooling, Hybrid, HAVES
Title of the Paper: Synchronous
Motor Observability Study and a New Robust MRAS Speed Observer with an
Improved Zero-speed Position Estimation Design for Surface PMSM
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Authors: Dalila Zaltni,
Mohamed Naceur Abdelkrim
Abstract: This paper deals with the Permanent Magnet Synchronous Motor (PMSM)
observability problems and proposes a simple and effective solution to improve
the rotor speed and position estimation for Surface PMSM (SPMSM). In fact, the
problem of loss of observability at low frequency range is always recognized
in experimental settings. Nevertheless, there are no sufficient theoretical
observability analyses for the PMSM. In the literature, only the sufficient
observability condition has been presented. Therefore, the current work is
aimed specially to the necessary observability condition analysis. In order to
improve the rotor speed and position estimation in the case of SPMSM, a
special attention is given to Model Reference Adaptive System (MRAS). MRAS
based techniques are one of the best methods to estimate the rotor speed and
position due to its performances and straight forward stability approach. In
this paper, we propose a new robust MRAS scheme based on sliding mode
techniques to estimate the rotor speed of a SPMSM. Furthermore, an
Estimator/Observer swapping system is designed to overcome position
observability problems at zero speed which is an unobservable state point. The
stability of the proposed MRAS observer is also presented and discussed.
Various tests are carried out in simulation using MATLAB/SIMULINK to
illustrate the obtained theoretical results.
Keywords: Permanent magnet
synchronous motor, Observability analysis, Model reference adaptive system,
Observer, Sliding mode
Title of the Paper: Pitch
Rate Damping of an Aircraft by Fuzzy and Classical PD Controller
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Authors: Yasemin Isik
Abstract: Aircraft dynamics are in general nonlinear, time varying, and
uncertain. A control system (classical control systems) designed for a flight
condition, may not provide the desired stability and performance
characteristics in case of deviation from the equilibrium point. There are
numerous studies regarding flight control in the literature. One of them is
fuzzy flight control system. Fuzzy logic controllers (FLCs) from their
inception have demonstrated a vast range of applicability to processes where
the plant transfer function is not defined but the control action can be
described in terms of linguistic variables. FLC's are also being used with
improved performance instead of “classical" controllers where the plant
transfer function is known. Most of the applications about the design of fuzzy
flight control are in simulation level. In this study, the design of fuzzy and
classical PD controller for the pitch rate damping system is analyzed and the
results for a two-engined jet fighter aircraft are evaluated in a MATLAB coded
program.
Keywords: Aircraft, flight
control, pitch rate, classical PD control, fuzzy and fuzzy PD control
Title of the Paper: Stabilization
of an Inertia Wheel Pendulum using an Implicit Controller Design
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Authors: Nadeem Qaiser,
Saleh Bin Tariq, Naveed Haq, Tariq Aziz
Abstract: Control design for an underactuated system is complicated, as
feedback linearization cannot be applied directly. This issue can be addressed
by using partial feedback linearization with appropriate coordinate
transformations. Unfortunately, this often results in leaving the core system
non-affine. Design of a control law for a non-affine system is quiet difficult
due to lack of mathematical tools needed. The Inertia Wheel Pendulum is a
benchmark example of such non-affine systems. The under actuation property,
posing problems in exact feedback linearization makes design of the control
law for this a challenging task. Although Partial feedback linearization
reduces a part of the system to linear but leaves the core system non-affine
in nature. A novel nonlinear controller design fusing recently introduced
Sliding Surface Control technique with Implicit Control of the nonlinear core
is presented to tackle the issue. The task of the nonlinear controller is not
only to stop the wheel but also to stabilize the pendulum at its unstable
upright equilibrium in such a way that the inertial wheel stops rotating. The
design procedure is simpler and more intuitive than currently available
sliding surfaces, integrator backstepping or energy shaping designs. Stability
is analyzed by decomposing the system into a cascade of linear and nonlinear
sub-systems. Stability and advantages over existing controller designs are
analyzed theoretically and verified using numerical simulations.
Keywords: Inertia Wheel
Pendulum, Implicit control, Multiple Sliding Surfaces, Underactuated
Mechanical Systems, Backstepping
Title of the Paper: A
Generalised Minimum Variance Controller for Time-Varying MIMO Linear Systems
with Multiple Delays
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Authors: Zheng Li,
Christian Schmid
Abstract: In this paper we study optimal control of time-varying multi-input
multi-output stochastic systems and develop a generalised minimum variance
controller. The system to be controlled is described using a multiinput
multi-output time-varying autoregressive moving average model that has
multiple delays between the output and input. The controller minimises the sum
of output tracking error variances and squared current control variables.
Keywords: MIMO systems,
minimum variance control; multiple delays, time-varying systems
Issue 8, Volume 5,
August 2010
Title of the Paper: SCADA
Architecture with Mobile Remote Components
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Authors: Tai-Hoon Kim
Abstract: With the advent of new technologies, the demand of connecting IT
systems to the Internet is increasing. This is also the case for Control
systems specifically SCADA (Supervisory Control and Data Acquisition) systems.
Traditional SCADA systems are connected only in a limited private network.
Because SCADA is considered a critical infrastructure, some operators hold
back on connecting it to the Internet. Connection SCADA systems to the
internet can also provide a lot of advantages in terms of control, data
viewing and generation. Along with these advantages, are security issues
regarding web SCADA, operators are pushed to connect SCADA systems through the
Internet. Because of this, many issues regarding security surfaced. Mobility
is also in demand in many IT systems. In this paper, the architecture of SCADA
in the web with remote sensors is discussed. We believe that having mobile
components can improve the performance and it can provide larger operational
coverage for SCADA systems.
Keywords: SCADA, Mobility,
Remote Components, Control Systems
Title of the Paper: Weather
Condition Double Checking in Internet SCADA Environment
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Authors: Tai-Hoon Kim
Abstract: The function of SCADA is collecting of the information, transferring
it back to the central site, carrying out any necessary analysis and control
and then displaying that information on a number of operator screens. Systems
automatically control the actions and control the process of automation.
Internet SCADA was developed to widen the coverage span of the SCADA system.
In this paper, we design a double checking scheme for Weather Condition in
Internet SCADA Environment. This is to improve the accuracy of data and to
improve the performance of SCADA systems.
Keywords: SCADA,
TeleControl, API, Control Systems
Title of the Paper: Research
Trend on Secure SCADA Network Technology and Methods
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Authors: Farkhod
Alsiherov, Taihoon Kim
Abstract: The overall security concern facing the designers and operators of
SCADA and, more generally, of industrial control systems typically originates
either from malicious threat agents attempting to disrupt the control system
operation, e.g. to create a power outage, or it originates from inadvertent
actions, equipment failure, or similar. Electric utilities require secure
network and control system. This paper illustrates solutions for control
networks and equipment, SCADA data and communications.
Keywords: SCADA security,
Secure SCADA networks, SCADA systems
Title of the Paper: Synthesis
of an Approximate Feedback Nonlinear Control based on Optimization Methods
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Authors: Wiem Jebri
Jemai, Houssem Jerbi, Mohamed Naceur Abdelkrim
Abstract: In the present work, we propose a novel polynomial approach to
approximate the Input-State feedback linearization control. The aim of this
new method is to simplify the implementation complexity of the exact Input-
State feedback linearization. Indeed, the present approach leads to an
analytical control law via analytical nonlinear transformations without need
to resolve a set of partial differential equations. In fact, the analytical
control law, determined via the proposed work, is dependent to an arbitrary
choice of some parameters. So and in order to ensure a satisfactory evolution
of the control input, we resort to optimization methods to have the optimal
values of parameters. A study simulation is presented to show the
effectiveness of the proposed approach.
Keywords: Nonlinear system
control, Input-State feedback linearization, Analytical representations,
probabilistic algorithms, Monte Carlo optimization
Title of the Paper: Wired
and Wireless Remote Control of PV System
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Authors: Mohamed Zahran,
Yousry Atia, Abdullah Alhosseen, Ihab El-Sayed
Abstract: This paper describes a recent work developed for the real-time
diagnostic monitoring system of photovoltaic (PV) power plant. It aims to
create a stand-alone photovoltaic generator that can be easily relocated in
remote areas to evaluate the feasibility of photovoltaic energy applications.
For research and development purposes, the main goal of this work is to
develop a cost effective and modern technique for monitoring and control the
variable of the PV system. A set of sensors were installed to monitor the
electric current and voltage of the energy generated, the energy stored and
the energy used by the loads that may be connected to the system. Other
parameters like solar radiations and temperatures of the photovoltaic module
were monitored. In order to reduce off-site analysis effort, reports on PV
plant performance are generated on request for user defined time period. User
interface provides information on PV plant operation, displayed as digital
values, slide bars and graphs. A proposed wireless system configuration is
presented also in this paper using NI WSN 3202 nods and WSN-9791 module and NI
WAP3711 Industrial Access Point. The novelty of the system is that it can
publish data over the Internet using LabVIEW Web Server capabilities and
deliver the operation performance data for the end user location. Finally, a
measurement and communication hardware was installed to interface the system
developed with a conventional computer. A PC -microcontroller interface based
software and hardware is implemented as a wired monitor and control of PV
system. In this way, the performance of the overall system in real rural
conditions could be evaluated efficiently. Visual software that reads,
visualizes and saves the data generated by the system was also developed by
means of the LabVIEW programming environment.
Keywords: Solar cell
model, monitoring system, LabVIEW, PV system, sensors and actuators, wireless,
remote control
Title of the Paper: Takagi-Sugeno
vs. Lyapunov-based Tracking Control for a Wheeled Mobile Robot
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Authors: Saso Blazic
Abstract: In this paper a novel kinematic model is proposed where the
transformation between the robot posture and the system state is bijective.
Two control approaches are proposed to solve the tracking problem. One
approach is based on the Takagi-Sugeno fuzzy model where a parallel
distributed compensation control is used. The alternative approach is to use
Lyapunov stability analysis to construct a nonlinear controller that achieves
asymptotic stability if reference velocities satisfy the condition of
persistent excitation.
Keywords: Mobile robot,
Kinematic model, Takagi-Sugeno model, PDC control, Lyapunov stability
Title of the Paper: PSO
based Single and Two Interconnected Area Predictive Automatic Generation
Control
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Authors: Muhammad S.
Yousuf, Hussain N. Al-Duwaish, Zakariya M. Al-Hamouz
Abstract: This paper presents a Particle Swarm Optimization (PSO) based Model
Predictive Control (MPC) scheme applied to Automatic Generation Control (AGC)
systems. The proposed scheme formulates the MPC as an optimization problem and
PSO is used to find its solution. Single area AGC model is taken incorporating
Generation Rate Constraint (GRC) nonlinearities and constraints on the control
input. Two interconnected area AGC system excluding nonlinearity is also
studied. The simulation results draw several comparisons to preceding
literature showing significant improvements and signifying the strengths of
the proposed MPC scheme. Furthermore, performance of controller is also
explored for varying power demands, different GRC values and parameter
variations.
Keywords: Model Predictive
Control, Particle Swarm Optimization, Automatic Generation Control, Load
Frequency Control, Nonlinear Predictive Control, Optimization Problem
Title of the Paper: Convex
Hull Manipulation Based Control Performance Optimisation
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Authors: Patricia Grof,
Peter Baranyi, Peter Korondi
Abstract: This paper deals with the topic of qLPV state-space model based
control design in which LMIs are used to optimize the multi-objective control
performance. In this paper we investigate how the manipulation convex hull of
the polytopic model influences the control performance which is derived by
LMIs. We examine these influences through the control design of the two
dimensional aeroelastic system’s example. First we define various TP type
polytopic model representations of a wing section whose vertices define
different convex hulls. In the second step we investigate how these models
lead to different control performances.
Keywords: Polytopic model,
TP model, LMI, convex hull
Issue 9, Volume 5,
September 2010
Title of the Paper: Extended
TP Model Transformation for Polytopic Representation of Impedance Model with
Feedback Delay
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Authors: Peter Galambos,
Peter Baranyi, Peter Korondi
Abstract: In force controlled industrial robots, haptic and telemanipulation
devices stability and control performance are contradicting requirements. In
distributed systems where the sensors, actuators and control logic are
separated in space, due to the network delays the control process may become
unstable. In our research, we consider the coupled impedance type control
algorithms as common used method in telemanipulation and interaction control
of robots. In this paper, an extended TP model transformation is proposed to
convert the delayed system into a polytopic tensor product (TP) model
considering the value of the feedback delay as a parameter. Using such model,
controller design become tractable as it does not contain feedback delay. A
numerical example for a single degree of freedom impedance model with feedback
delay is discussed. The results are confirmed by simulation.
Keywords: Delayed systems,
Feedback systems, Interaction control, Telemanipulation, Haptics, TP Model
Transformation, qLPV model, Polytopic linear models
Title of the Paper: Design
of a Neuro-Controller for Multivariable Nonlinear Time-Varying Systems
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Authors: H. Al-Duwaish,
S. Z. Rizvi
Abstract: This paper presents a controller design method for multi-input
multi-output (MIMO) nonlinear timevarying systems using Radial Basis Funtion
(RBF) neural network. The developed neuro-controller generates optimal control
signals abiding by constraints, if any, on the control signal or on the system
output. The proposed controller does not require an explicit knowledge of the
states of the system or any apriori knowledge of the structure of nonlinearity
of the system. Time based variations in system parameters as well as system
nonlinearities are successfully compensated by the neural network. Simulation
results for nonlinear time-varying systems are included at the end and
controller performance is analyzed.
Keywords: Neural Network,
Radial Basis Functions, Optimization, Multivariable, Constraints
Title of the Paper: Mobile
Robot Behavior Based Navigation Architecture using a Linear Graph of Passages
as Landmarks for Path Definition
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Authors: Lubnen Name
Moussi, Marconi Kolm Madrid
Abstract: In this work the authors present a mobile robot architecture design
for real time autonomous navigation considering minimum requirements of
hardware and computation. These requirements determine the use of simple
sensors and minimum representation of the environment. The approach chosen was
Behavior-Based for the design of the architecture and the behaviors. It is
implemented under simulation of a differential wheels robot inside a 2D
environment with a layout very close to a real situation for laboratories,
offices and classrooms. The solution takes into consideration local and long
run navigation. A first approach utilizes only reactive behaviors, solving
very well local navigation. It also gives a partial solution to long run
navigation in a simple environment, with only two rooms, doing it without path
definition. A complete solution for an environment with many rooms is
developed adding to the previous approach more behaviors that will take care
of path definition and control. A linear graph, having the passages as
landmarks, structures the environment representation and is the basis for the
algorithm of path definition that gives an efficient solution. The
architecture has not a central planner and controller as in traditional
deliberative architectures; planning and control arises from the independent
parallel functioning of all the behaviors. The results demonstrate that the
design achieved its objectives and some important points to improve it are
shown.
Keywords: Autonomous
navigation, mobile robotics, behavior-based robotics, emergent behaviors, path
definition and control, target seek
Title of the Paper: A
Practical Solution for the Classification in Interval-Valued Information
Systems
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Authors: Amaury
Caballero, Kang Yen, Yechang Fang
Abstract: Complex information systems have to manage enormous quantity of
data, representing different measurements or attributes from various sources.
Classification of this set of data is a difficult task that frequently
requires special methods for being solved. The problem of classification in
information systems has been studied by many authors, and different methods
have been developed. The use of rough sets, fuzzy logic, neural networks,
entropy, or the combination of these methods has been used widely. When
information is diffuse and the number of obtained values for each attribute is
large, so is the number of rules obtained for the classification. Even worst
is hidden information in the data that makes the process complicated. Due to
this fact, an interval of values is defined for each attribute, moving from
the minimum to the maximum obtained values in the collected database. This is
what is defined as interval-valued information systems. Differently from other
works, the concept of information measure is used in this paper, together with
a fuzzy logic discrimination tool. Using these concepts, initially an
attribute reduction is obtained and then fuzzy logic is applied for
discriminating among the possible solutions. This method is simpler than
others, and provides accuracy not less than the usually employed methods.
Keywords: Fuzzy Logic,
Information Systems, Classification, Databases, Diffuse Information
Title of the Paper: Complex
Structure Workspace Sweeping Using Semiautonomous Vacuum Cleaners
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Authors: Krzysztof
Skrzypczyk, Agnieszka Pieronczyk
Abstract: The paper presents the study of design and synthesis of the system
dedicated for sweeping large and complex spaces using a team of cleaning
robots. The problems of coordination of activities of individual robotic-unit
is discussed. Application of the Game Theory for creation of coordination
algorithms is proposed. The paper deals also with design and implementation of
algorithms of movement of autonomous (or semiautonomous) vacuum cleaner, that
would be able to work inside of a flat, but not free of obstacles workspaces.
In the paper several proposed algorithms of surface covering are discussed.
The two algorithms were selected as the most appropriate and presented in this
work. Experimental validation of efficiency of the proposed approach were done
and the results of the validation are discussed in the paper.
Keywords: Mobile robotics,
game theory, multi-robot, semiautonomous systems, vacuum cleaners, surface
covering
Title of the Paper: Twin
Motor Drives in Weapon Systems
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Authors: Jiri Balla
Abstract: The paper deals with the use of the twin motor drives in loading
systems of guns and in small arms. The mechanical parts are described as
systems with three degrees of freedom connected with flexible coupling. The
electrical and hydraulic parts enable to determine the main power
characteristics as are the torque and the angular velocity driving the ramming
device and the chain gun mechanism.
Keywords: Twin motor,
Chain gun, Gatling gun, Electric DC drive, Loading system, Ramming device,
Motion equation
Title of the Paper: Control
System of Unmanned Aerial Vehicle used for Endurance Autonomous Monitoring
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Authors: Teodor-Viorel
Chelaru, Vasile Nicolae Constantinescu, Adrian Chelaru
Abstract: The paper purpose is to present some aspects regarding the control
system of unmanned aerial vehicle - UAV, used to local observations,
surveillance and monitoring interest area. The calculus methodology allows a
numerical simulation of UAV evolution in bad atmospheric conditions by using
nonlinear model, as well as a linear one for obtaining guidance command. The
UAV model which will be presented has six DOF (degrees of freedom), and
autonomous control system. This theoretical development allows us to build
stability matrix, command matrix and control matrix and finally to analyze the
stability of autonomous UAV flight .A robust guidance system, based on Kalman
filter will be evaluated for different fly conditions and the results will be
presented. The flight parameters and guidance will be analyzed. The paper is
inspired by national project SAMO (Autonomous Aerial Monitoring System for
Interest Areas of Great Endurance).
Keywords: UAV, Simulation,
Control, Guidance, Endurance, Surveillance, Monitoring, Kalman filter
Issue 10, Volume 5,
October 2010
Title of the Paper: Modeling
of Raw Material Mixing Process in Raw Meal Grinding Installations
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Authors: Dimitris
Tsamatsoulis
Abstract: The objective of the present study is to build a reliable model of
the dynamics among the chemical modules in the outlet of raw meal grinding
systems and the proportion of the raw materials. The process model is
constituted from three transfer functions, each one containing five
independent parameters. The computations are performed using a full year
industrial data by constructing a specific algorithm. The results indicate
high parameters uncertainty due to the large number of disturbances during the
raw mill operation. The model developed can feed with inputs advanced
automatic control implementations, in order a robust controller to be
achieved, able to attenuate the disturbances affecting the raw meal quality.
Keywords: Dynamics, Raw
meal, Quality, Mill, Grinding, Model, Uncertainty
Title of the Paper: Aircrafts'
Control and Command Using Hierarchical Dynamic Inversion
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Authors: Mihai Lungu
Abstract: The paper presents a methodology for the flight control law’s design
for the trajectory pursuit using hierarchical dynamic inversion; this is based
on separation of multi-time-scale and multi-loop closing method. The attitude
angles are taken as slow variable while angular velocities as fast variables.
The slow variables are controlled by the fast ones, which, in turn, are
controlled by aerodynamic command surfaces. It greatly simplifies the flight
control design compared with PID conventional approaches. The used dynamic
equations are classified into 4 groups according to the stairs of time
measuring from the physical point of view [1]; each group of variables is
controlled by the group of faster neighboring variables. The authors made the
analysis of the longitudinal and lateral movements of the aircrafts, have
obtained two original block diagrams and, using complex Matlab/Simulink
models, have obtained graphic characteristics which demonstrate the
effectiveness of the proposed method.
Keywords: Aircraft,
hierarchical dynamic inversion, control law
Title of the Paper: Self
– Tuning Control of Continuous – Time Systems
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Authors: Marek Kubalcik,
Vladimir Bobal
Abstract: One approach to a recursive identification of continuous – time
systems was implemented in self – tuning control of a system of interconnected
tanks. Since derivatives of input and output variables of continuous – time
systems can not be directly measured, differential filters and filtered
variables are established to substitute primary variables. The filtered
variables are then used in a recursive identification procedure where the
classical recursive least squares method is used to identify the system.
Results of real – time experiments are compared to results obtained with an
analogical discrete controller. The method was also verified by simulation on
a multivariable system in order to verify the algorithm on a system with more
complex and complicated structure, where one output is influenced by more
inputs.
Keywords: Self – tuning
control, adaptive control, recursive estimation, nonlinear systems, polynomial
methods, real – time control
Title of the Paper: On-Line
Simulator for Decision Support in Distribution Control Centers in a Smart Grid
Context
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Authors: A.
Espinosa-Reza, A. Quintero-Reyes, R.Garcia-Mendoza, J. F. Borjas-Diaz, T. M.
Calleros-Torres, B. Sierra-Rodriguez, R. Torres-Abrego
Abstract: This paper shows the physical, logical and functional architecture
designed for integrating an On-Line Simulator of Electrical Distribution
Networks (SED by its acronyms in Spanish) for decision support in Distribution
Control Centers in Mexico. The main objective is the integration of
engineering functions for distribution networks (power flow, short circuit,
optimal reconfiguration, reliability, among others) and an Expert System (Case
Based Reasoning) in order to support the processes of information analysis,
decision making and training on the job at Regional Control Centers of
Comision Federal de Electricidad (CFE by its acronyms in Spanish). The On-Line
Simulator is installed, updated and in operation in a Distribution Control
Center (Zona Tampico) and in a Regional Center for analysis and monitoring
(Division Golfo Centro). Currently the On-Line Simulator is in use to
establish the Semantic Model (CIM based) in order to integrate the CIM
interoperability architecture for systems supporting Operations for
Distribution Networks in Mexico.
Keywords: Simulator, CIM,
Smart Grid, Electrical Distribution Network, Real-Time data, On-Line data,
SCADA, DMS, optimal restoration, Decision Support System
Title of the Paper: An
Automatic Water Management System for Large-Scale Rice Paddy Fields
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Authors: Teruji Sekozawa
Abstract: An automatic water management system for large-scale paddy fields
has been developed. The purposes of that are to supply the paddy fields with
water or drain water from that automatically, to decrease water consumption,
and to have a good harvest. To accomplish the above purpose, developed system
has five functions, (1) prediction of paddy growth stages, (2) water level
control corresponding to growth stages, (3) estimation of mean water level,
(4) prediction of water consumption, and (5) optimal water allocation for
minimizing of damage. In this paper, we especially give a detail description
of functions (3) and (5). For (3), we construct estimation model based on
Kalman-filter theory, and give an estimation result. For (5), we propose
calculation method of the damage rate of paddy from cold weather, and give a
simulation result of optimal water distribution to thirty paddy fields.
Keywords: Paddy field,
Prediction of growth stages, Water level control, Estimating mean water level,
Predict field consumption, Optimal water allocation
Title of the Paper: Intelligent
System Based on DSP to Monitoring and Maintain Optimum Environmental
Conditions in a Fir Saplings Tree Greenhouse
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Authors: Manuela Panoiu,
Caius Panoiu, Loredana Ghiorghioni, Raluca Rob
Abstract: In this paper is presented an intelligent system for measure and
maintain the optimum environmental conditions in a fir tree greenhouse. The
proposed system used a DSP development board built TMS 320 F2812. In a fir
tree greenhouse environment condition is more stringent than in a typical
greenhouse in all respects. In such a greenhouse the most sensitive conditions
refer to soil moisture, air humidity and air temperature. The proposed system
allows acquisition of soil moisture, air humidity and air temperature.
Depending on these the system sends three output commands. These commands are
generated by using Fuzzy logic.
Keywords: Fuzzy logic,
DSP, temperature control, humidity control, environmental conditions
Title of the Paper: Ziegler-Nichols
PID Controller Based Intelligent Fuzzy Control of a SPM System Design
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Authors: Jium-Ming Lin,
Po-Kuang Chang
Abstract: This research is to use Ziegler-Nichols PID controller as a basement
for the fuzzy controller design in the outer-loop of a Scanning Probe
Microscope (SPM) to reduce the hysteresis effect. This improvement has been
verified by practical implementation. Comparing the results with a previous
design for the outer-loop with PI compensator, one can see that the proposed
system is more robust.
Keywords: Ziegler-Nichols
PID controller, PID Fuzzy controller, SPM, Hysteresis effect, LVT
Issue 11, Volume 5,
November 2010
Title of the Paper: A
Survey on the Application of the Elliptical Trigonometry in Industrial
Electronic Systems using Controlled Waveforms with Modeling and Simulating of
Two Functions Elliptic Mar and Elliptic Jes-x
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Authors: Claude Bayeh
Abstract: In industrial electronic systems, power converters with power
components are used. Each controlled component has its own control circuit. In
this paper, the author proposes an original control circuit for each function
in order to replace the different existing circuits. The proposed circuit is
the representation of an elliptical trigonometric function as “Elliptic Mar”
and “Elliptic Jes-x” that are particular cases of the elliptical trigonometry.
Thus, with one function, by varying the values of its parameters, the output
waveform will change and can describe more than 12 different waveforms.
Finally for each function, a block diagram, a model of the circuit and a
programming part are treated using Matlab/Simulink. The results of the studied
circuit are presented and discussed.
Keywords: Power
electronics, power converters, mathematics, trigonometry, multi form signal
Title of the Paper: A
New Hardware-Based Actuator for Driving an AC/DC Electromagnetic Contactor
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Authors: Chih-Yu Hung,
Chieh-Tsung Chi
Abstract: This paper focuses on developing an interchangeable electromagnetic
contactor that essentially features with high power efficiency, low
electromagnetic noise, and high power resource usage. The magnetic coils of
this new IC-controlled method can be excited by AC or DC voltage and the range
of the operating voltage is shown to be much larger than the conventional
contactor. A wide range of applications for the new contactor is obtained.
According to the electric performance requirement, the proposed controlling
method, the pulse width modulation (PWM), provides a suitable energy for the
exciting coils under the different operating condition. This is resulted in a
stable operation between closing or opening process of the contactor greatly
leads to the reduction of noise and energy loss for the exciting coils. Thus,
the using life of the contactor can be greatly extended. In order to prove the
validity of the proposed controlling method in this paper, several experiments
had been performed and the results are shown the feasibility and reliability
of the new design.
Keywords: Electromagnetic
contactor, Electromagnetic noise, IC-controlled, Pulse Width Modulation,
Energy, Using life
Title of the Paper: A
Fuzzy Controller with Various T-norms Applied in Robot Navigation
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Authors: Ion Iancu ,
Mihaela Colhon, Mihai Dupac
Abstract: Fuzzy set theory and fuzzy logic are the convenient tools for
handling uncertain, imprecise, or unmodeled data in intelligent
decision-making systems. The utility of fuzzy logic in system controls domain
is presented in the context of a mobile robot navigation control application.
The Takagi-Sugeno controller is a fuzzy model capable of approximating a wide
class of nonlinear systems by decomposing the input space into several partial
fuzzy subspaces and representing the output space with a linear equation. The
output control action is obtained from the rule-base and a set of crisp
inputs. A Takagi-Sugeno type Fuzzy Logic Controller (FLC), to work with crisp
data, intervals and fuzzy sets inputs, is proposed in connection with a mobile
robot navigation model. The model also works with a set of t-norms, and for
any t-norm an output value is obtained. Finally, these outputs are combined to
obtain the overall output of the system.
Keywords: Fuzzy set, Fuzzy
logic control, Zero order system, Mobile robot, Repulsive angle, T-norm
Issue 12, Volume 5,
December 2010
Title of the Paper: The
Neural Network-Based Forecasting in Environmental Systems
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Authors: Mihaela Oprea,
Alexandra Matei
Abstract: The forecasting problem is one of the main environmental problems
that need efficient software tools. More concrete, it can mean
meteorological/weather forecasting, air/soil/water pollution forecasting,
flood forecasting and so on. Several methods based on artificial intelligence
were proposed by taken into account that they can offer more informed methods
that use domain specific knowledge, and provide solutions faster than the
traditional methods, those based on a mathematical formalism. In this paper we
present the application of neural network-based forecasting methods, as well
as their combination with fuzzy logic in air pollution forecast and flood
forecast in a hydrographic basin. The neuro-fuzzy based forecasting can be
integrated in a more complex real time monitoring, analysis, and control
system for environmental pollution or hydrological processes.
Keywords: Artificial
Neural Network, Fuzzy Logic, Air Pollution Forecast, Flood Forecast,
Hydrographic Basin
Title of the Paper: The
Evolution of the Electronic Tax Documents in Latin America
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Authors: Eduardo Mario
Dias, Newton Oller De Mello, Marcelo Luiz Alves Fernandez
Abstract: With the advance in information technologies, the companies have
modernized its way of trading their goods and relating to their customers. In
view of the evolution and dynamics of the commercial relation, the tax
authorities of the countries had to keep up with the progress and evolve: one
of the answers adopted were the electronic documents for purposes of tax
control of ommercial operations. This article aims at tracing a comparison
among the several models adopted by countries in Latin America.
Keywords: Electronic tax
document, digital signature, Latin America, tax modernization, comparison of
models
Title of the Paper: New
Technologies for Nota Fiscal Paulista (Sao Paulo Tax Invoice): Automation of
the Tax Documents Issue Process in the Retail of the State of Sao Paulo -
Brazil
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Authors: Newton Oller De
Mello, Marcelo Luiz Alves Fernandez, Vidal Augusto Zapparoli Castro Melo,
Eduardo Mario Dias, Caio Fernando Fontana
Abstract: This article presents requirements and a technological proposal for
improvement of the project of Nota Fiscal Paulista (Sao Paulo Tax Invoice) of
the Government of the State of Sao Paulo – Brazil, aiming at the automation of
the process of issuing the electronic tax documents in the retail. The work
has been developed based on the analysis of the current environment of Sao
Paulo Tax Invoice and other electronic document projects implemented by the
Secretariat of Finance of the State of Sao Paulo and presents new operating
and technology use concepts that may meet the requirements of the business.
The term “technological” in this work is employed to define equipment,
communication means and software engineering that permit to extend the
computing support to the field, with the purpose of improving and speeding up
the operations.
Keywords: Electronic Tax
Documents, Sao Paulo Tax Invoice, Wireless communication, Tax inspection
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