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2004 IFAC Workshop on Programmable Devices and Systems, PDS 2004

作者： Machacek, Zdenek Srovnal, Vilem Department of Measurement and Control VSB-Technical University of Ostrava Faculty of Electric Engineering and Computer Science 17. listopadu 15 Ostrava-Poruba708 33 Czech Republic

Development in a computer area enables creation of an automatic diagnostic and a maintenance system. These new diagnostic systems should be more robust, adaptable, reliable, and compute in a real time. A modern diagnostic system could be composed from an embedded system and a personal computer. The embedded system enables ensuring of all very positive and improves feature for the diagnostic and maintenance system design. The embedded system is controlled by a digital signal processor DSP. The personal computer enables well arranged a visualization of all measured and computed data, which are useful for the diagnostic and maintenance of technical devices. The diagnostic system design is very complicated and difficult for necessity to know about problematic of a technology, methods of measuring magnitude, a data analyze, a data computation, the embedded systems and a data communication. Our development of the diagnostic and maintenance system is in-process, and research target is composing modern improved diagnostic and maintenance system controlled by the embedded systems. © 2004 IFAC.

关键词： Embedded systems

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measurement of pressures in silos using strain gages

Measurement of pressures in silos using strain gages

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2004 IFAC Workshop on Programmable Devices and Systems, PDS 2004

作者： Martinák, Lukáš Oujezdský, Aleš Slíva, Aleš Department of Measurement and Control Faculty of Electrical Engineering and Computer Science 17. listopadu 15 Ostrava-Poruba708 33 Czech Republic Institute of Transportation Faculty of Mechanical Engineering VŠB-Technical University of Ostrava 17. listopadu 15 Ostrava-Poruba708 33 Czech Republic

The paper deals with a bulk solid pressure observation inside a silo using new developed 3Dimensional (Triaxial) Indicator. New design and conception of the 3D indicator have been developed exclusively for detecting of real stresses/pressures inside vessels, bunkers and silos. The unique design of the 3D indicator in cooperation with appropriate used software, and with a silo model is able to assure a clear image to pressure/stress identifications in particulate solid. Moreover, the third dimension is unique and enriches the area of the pressure knowledge. The measurement process incl. the procedure of processing values using the created interactive software environment has been explained in the poster intimately and investigated in a real silo loaded by a poured bulk solid. Real results and outputs of the investigation have been presented and discovered in the paper. © 2004 IFAC.

关键词： Strain gages

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Design and optimization of distributed control system using UML model

Design and optimization of distributed control system using ...

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International Conference and Workshop on engineering of computer-Based Systems

作者： J. Kotzian V. Srovnal Faculty of Electrical Engineering and Computer Science Department of Measurement and Control VšB Technical University of Ostrava Czech Republic

The article discusses with the utilization of the UML language for project, realization and optimization of distributed control systems. The work is oriented on the part of distributed control system with embedded systems interconnected by the industrial bus CAN. The article describes the project methodology, UML model and optimization of the system according to the target function. Also example of using methodology in the KUPSON Electronic Article Surveillance control System is described.

关键词： Design optimization Distributed control Unified modeling language Embedded system LAN interconnection electrical equipment industry Industrial control Optimization methods Surveillance control systems

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A20: Using a PLC Tecomat TC600 as a fuzzy regulator in the problem of an inverted pendulum system regulation

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IFAC Proceedings Volumes 2004年第20期37卷 115-120页

作者： Petr Želasko Martin Moštěk Miroslav Pokorný Faculty of Electrical Engineering and Computer Science VSB Technical University of Ostrava Department of Measurement and Control 17. listopadu 15 708 33 Ostrava - Poruba CZECH REPUBLIC

This work solves a problem of the inverted pendulum system regulation using a fuzzy regulator. As this regulator has been used the programmable logic controller (PLC) Tecomat TC600, type 607. The PLC is connected to the personal computer (PC) by the use of a voltage converter and an industrial PC card PCI 1751. The PC works as a simulation device of the inverted pendulum system, where the simulation is performed by a program created in the Delphi programming language version 5. The fuzzy model used in the fuzzy regulator is designed directly for the inverted pendulum system. The whole application has been successfully tested and also very good results have been reached.

关键词： Fuzzy control Programmable logic controller Regulation Inverted pendulum System model Simulation Tests

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Methods for optimal control of unified power flow controllers

Methods for optimal control of unified power flow controller...

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2004 IEEE International Conference on Industrial Technology, ICIT

作者： Al Asooly, Hedaya Qin, Chao Santarius, Pavel Tlustý, Josef Valouch, Viktor Department of Power Engineering Faculty of Electrical Engineering CTU Technická 2 16627 Prague 6 Czech Republic Institute of Electrical Engineering Academy of Sciences of the Czech Republic Dolejškova 5 182 02 Praha 8 Czech Republic Department of Measurement Faculty of Electrical Engineering and Computer Science Technical University in Ostrava 17 listopadu 15 708 33 Ostrava Czech Republic

Recent advances in the power electronics have made the use of the voltage source inverter (VSI) feasible at both transmission and distribution levels. This paper demonstrates a new optimal control scheme for the Unified Power Flow controller (UPFC) to control power flow as well to improve the system stability and to eliminate current harmonics and voltage flickers in the system. In this paper optimal control with two tracking strategies have been tested: tracking according to steady state behavior and tracking with PI controller. The shunt converter only and the series converter only have been demonstrated too. © 2004 IEEE.

关键词： Power control

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C07: Compact data acquisition module for the applications of meteorological measurements

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IFAC Proceedings Volumes 2004年第20期37卷 299-303页

作者： Andrej Bencúr Vladimír Kašík Faculty of Electrical Engineering and Computer Science VSB Technical University of Ostrava Department of Measurement and Control 17. listopadu 15 708 33 Ostrava - Poruba CZECH REPUBLIC

The aim of this work was to design and realize a compact module of data acquisition. This module was designed for the applications of meteorological measurements of barometric pressure, temperature and relative air humidity. The main parts of this module are above all 8-bit microcontroller with digital and analog ports, external EEPROM memory for storage of the measured data, LCD display for their actual visualization and RS232 interface for communication and transfer of data to PC. These data can be then visualized and browsed on a PC with a simple Delphi program MeteoView

关键词： Displays Hardware measurement Memory Applications Microcomputers Sensors

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C11: Design of measuring system for monitoring of state of ventilation fans

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IFAC Proceedings Volumes 2004年第20期37卷 322-325页

作者： Stanislav Slíva Zdeněk Slanina Faculty of Electrical Engineering and Computer Science VSB Technical University of Ostrava Department of Measurement and Control17. listopadu 15 708 33 Ostrava - Poruba CZECH REPUBLIC

This paper describes present state of our project, whose result should be the system measuring ventilation fans relevant quantities in industrial enviroment, and this data will be processed and evaluted to detect incomming problems and control maintenance of monitored device. We are designing control unit based on microcontroller Motorola HC08 family, which will be able to measure and make simple data processing. Further this data will be transferred into the main computer by using industrial bus to make evaluation and visualization.

关键词： Microcontroler Communication Predictive maintenance sensor accelerometer Industrial bus

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Parameters optimization of fuzzy-neural dynamic model

Parameters optimization of fuzzy-neural dynamic model

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Conference of the North American Fuzzy Information Processing Society - NAFIPS

作者： P. Cermak P. Chmiel Institute of Computer Science Silesian University in Opava Opava Czech Republic Department of Measurement and Control Faculty of Electrical Engineering and Computer Science VšB Technical University of Ostrava Ostrava Czech Republic

In this paper we proposed a fuzzy neural network model which can embody a fuzzy Takagi-Sugeno model and carry out fuzzy inference and support structure of fuzzy rules. The algorithm of model properties improvement consists of new origin procedures namely input space partition, fuzzy terms number and rule number extending, low-effective fuzzy terms and rules extraction and consequent structure identification. In the proposed fuzzy modeling method we first design a rough initial fuzzy model with complete partition of input variable space (or initial partition based on expert knowledge). Then a fuzzy neural network is constructed based on rough fuzzy model. By learning of the neural network we can tune of embedded initial fuzzy model. Next, the additional identifying procedure is introduced based on additional partition of fuzzy input space to improve the properties of initial fuzzy model and to decrease the model error. In final part of identification some low-effective terms and rules are extracted and final rule based model is formed. To apply the new identifying procedures and to introduce possibilities of variability of their properties some parameters have to be put in. The strategy of such parameter optimization is provided by new advanced genetic algorithm. Criterion and cost function has been selected as global fuzzy-neuro model error. To show the applicability of new method and to make a possibility to real systems modeling, we designed the fuzzy-neural network programme tool FUZNET. There were two case studies performed: the first case study presents the prediction of Mackey-Glass time series with using fuzzy-neural regression model (FNRM) predictor; the second case study presents task of a coke-oven gas cooler modeling.

关键词： Fuzzy neural networks Predictive models Takagi-Sugeno model Partitioning algorithms Inference algorithms Design methodology Input variables Neural networks Genetic algorithms Cost function

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D06: Predictive diagnostic and maintenance embedded system with DSP

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IFAC Proceedings Volumes 2004年第20期37卷 377-382页

作者： Zdenek Machacek Vilem Srovnal Department of Measurement and Control VSB-Technical University of Ostrava Faculty of Electric Engineering and Computer Science 17. listopadu 15 708 33 Ostrava-Poruba Czech Republic

关键词： Digital signal processor Embedded system Diagnostic system Predictive maintenance system Vibration analysis Noise detection Time analysis, Frequency analysis

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Methods for optimal control of unified power flow controllers

Methods for optimal control of unified power flow controller...

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IEEE International Conference on Industrial Technology (ICIT)

作者： H.A. Asooly C. Qin P. Santarius J. Tlusty V. Valouch Department of Power Engineering Faculty of Electrical Engineering Czech Republic Department of Power Engineering Faculty of Electrical Engineering Prague Czech Republic Department of Measurement Faculty of Electrical Engineering and Computer Science Technical University of Ostrava Ostrava Czech Republic Institute of Electrical Engineering Academy of Sciences슠of the슠Czech Republic Praque Czech Republic

关键词： Optimal control Load flow Voltage control control systems Power electronics Inverters Power system stability Power system harmonics Voltage fluctuations Testing

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