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作者： Suduc, Ana-Maria Bizoi, Mihai Gorghiu, Gabriel Gorghiu, Laura Monica Automatic Control Informatics and Electrical Engineering Department Valahia University 130082 Targoviste Romania Faculty of Sciences and Arts Valahia University Targoviste 18-24 Unirii Blvd. Targoviste 130082 Romania

ISBN: (纸本)9789898425157

It is commonly accepted that universities are an important source of new knowledge, especially in the science and technology sector. The mechanisms to transfer this new knowledge from academia to business organizations are widely discussed by many authors. This paper presents how web collaboration environments may help in distance knowledge transfer and also a web conferencing example meant to stress the factors which led to a successful web meeting for knowledge diffusion. There is presented also the positive feedback of the attendees, in the conditions of low participation rate in previous similar experiences.

关键词： Knowledge management

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Ratio counter - Solution of the relation between safety and availability of a communication system

Ratio counter - Solution of the relation between safety and ...

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作者： Zelenka, Ján Rastočný, Karol Holečko, Peter Franeková, Mária Institute of Informatics Slovak Academy of Sciences Dúbravská cesta 9 845 07 Bratislava Slovakia University of Žilina Faculty of Electrical Engineering Department of Control and Information Systems Univezitná 8215/1 010 26 Žilina Slovakia

ISBN: (纸本)9788070438657

Safety and reliability belong to the main quality attributes of a safety relevant control system. If a communication system is a component of a safety relevant control system then because of its properties it can also significantly affect the safety and reliability of the entire safety relevant control system. Safety and reliability attributes of a communication system can be influenced by a proper application of a so-called ratio criterion. Although the ratio criterion is often being utilised in practical applications, the parameters of ratio criterion are usually set intuitively. The contribution is focused on the problem of ratio counter parameters choice, which in co-operation with the safety code decoder provides operational checking of a non-trusted transmission system.

关键词： control systems

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Robust stabilization of interval plants using Kronecker summation method

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WSEAS Transactions on Systems 2010年第9期9卷 917-926页

作者： Matušů, Radek Prokop, Roman Matejičková, Katarína Bakošová, Monika Department of Automation and Control Engineering Faculty of Applied Informatics Tomas Bata University in Zlín Nad Stráněmi 4511 76005 Zlín Czech Republic Department of Information Engineering and Process Control Faculty of Chemical and Food Technology Slovak University of Technology in Bratislava Radlinského 9 81237 Bratislava Slovakia

This paper deals with design of continuous-time robustly stabilizing Proportional-Integral (PI) controllers for interval systems using the combination of Kronecker summation method, sixteen plant theorem and an algebraic approach to controller tuning. The effectiveness and practical applicability of the proposed method is demonstrated in both simulation and real experiments including control of a third order nonlinear electronic plant.

关键词： Continuous time systems

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Multiphase flow reconstruction in oil pipelines by portable capacitance tomography

Multiphase flow reconstruction in oil pipelines by portable ...

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IEEE SENSORS

作者： Elmy Johana Mohamad Ruzairi Abdul Rahim Department of Mechatronic and Robotics Engineering Faculty of Electrical and Electronic Engineering Universiti Tun Hussein Onn Malaysia Batu Pahat Johor Malaysia Process Tomography Research Group (PROTOM) Department of Control & Instrumentation Engineering Faculty of Electrical Engineering Universiti Teknologi Malaysia Skudai Johor Malaysia

A portable capacitance tomography system for real-time imaging of multiphase flows is developed and presented in this work. The earlier research shows that the electrical Capacitance Tomography (ECT) System is applicable in flow visualization (image reconstruction). The acquired concentration profile that obtains from capacitance measurements is able to imaging liquid and gas mixture in pipelines meanwhile the system development is designed to attach on a vessel. The electrode plates which act as the sensor has been assembled and fixed on the pipeline, thus it causes difficulty for the production to have any new process installation in the future. Therefore portable capacitance is a new approach technology on ECT system. The purpose of the system is for on-line monitoring of concentration profile in multiphase flow-rate measurement system for oil, water and gas flow in oil pipelines.

关键词： Electrodes Capacitance Pipelines Capacitance measurement Materials Sensors Image reconstruction

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Detection of small gas bubble using ultrasonic transmission-mode tomography system

Detection of small gas bubble using ultrasonic transmission-...

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IEEE Symposium on Industrial Electronics & Applications (ISIEA)

作者： Nor Muzakkir Nor Ayob Mohd Hafiz Fazalul Rahiman Zulkarnay Zakaria Sazali Yaacob Ruzairi Abdul Rahim Department of Mechatronic Engineering Universiti Malaysia Pedis Arau Perlis Malaysia Process Tomography Research Group (PROTOM) Control and Instrumentation Engineering Department Faculty of Electrical Engineering Universiti Teknologi Malaysia Skudai Johor Malaysia

This paper presents the development of an ultrasonic transmission-mode tomography system for the detection of small gas bubble using higher frequency ultrasonic sensors. The selection of the sensors is important and must be suitable to the application design. Consideration on the natural limitation of ultrasonic wave is also noted as the higher the frequency of the ultrasonic transducer, the better the sensitivity but lower penetration depth. 16-pairs of these ultrasonic sensors are installed and fixed inside a sensor jig which is designed to hold all the sensors. The sensor jig is also mounted on the circumference of a vertical column which will be used as the investigated process vessel. The developments presented also include the non-invasive fabrication techniques, the electronic measurement circuits, image reconstruction technique, and finally on the imaging results of the proposed system.

关键词： Acoustics Sensors Tomography Capacitors Back Ultrasonic transducers Image reconstruction

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Initial results on magnetic induction tomography hardware measurement using hall effect sensor application

Initial results on magnetic induction tomography hardware me...

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IEEE EMBS Conference on Biomedical engineering and Sciences (IECBES)

作者： Zulkarnay Zakaria Noor Aqma Hj. Mohd Yazid Noor Hidayah Jaafar Mohd Fahajumi Jumaah Muhammad Saiful Badri Mansor Ruzairi Abdul Rahim Biomedical Electronic Engineering School of Mechatronic Engineering Universiti Malaysia Pedis Arau Perlis Malaysia Process Tomography Research Group (PROTOM) Control and Instrumentation Engineering Department Faculty of Electrical Engineering Universiti Teknologi Malaysia Skudai Johor Malaysia

Magnetic induction tomography (MIT) is among the new technology that compliment other tomography methods such as ultrasonic, optical, capacitance and several others. This type of tomography applies the magnetic field to detect the existence of the object that is going to image. Several methods are possible in constructing the magnetic induction hardware. Most of the researchers used coils for both transmitter and receiver which are more complicated and need large space. The Hall Effect sensors (HES) have the potential of replacing the coil at the receiver side since it has the ability to measure the value of magnetic field strength and convert it to voltage value. This concept is same as the ultrasonic sensors used in ultrasonic tomography instrumentation hardware. The results have shown that the pattern of capture data by hall effect sensor are almost the same pattern for all 8 sensors for each material used. This have given positive sign that HES is capable to be applied in MIT measurement system.

关键词： Magnetic sensors Coils Magnetic fields Tomography Magnetic resonance imaging Magnetic field measurement

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control of a simple constrained MIMO system with steady state optimization - Case study

Control of a simple constrained MIMO system with steady stat...

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28th IASTED International Conference on Modelling, Identification, and control, MIC 2009

作者： Dušek, František Honc, Daniel Department of Process Control Faculty of Electrical Engineering and Informatics University of Pardubice Nám Čs. Legií 565 532 10 Pardubice Czech Republic

ISBN: (纸本)9780889867826

Possible contribution and limitations of model predictive controller are discussed for special case of thermostatic bath temperature control. The control potential is restricted because of constrained heating and cooling manipulated variables. The aim of the paper is to find out which knowledge and requirements can improve control and try to compare predictive controller with some traditional control approaches for given specific thermal process. Base predictive controller uses information about MIMO system dynamics and constrains. The control response of such a controller is unfortunately similar to known simple approaches. control with predictive controller became beneficial after additional information (future set-point knowledge) and other requirements (minimal energy cost - optimal steady state energy consumption) were used.

关键词： MIMO systems

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Machine vision for robot-soccer application

Machine vision for robot-soccer application

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作者： Wágner, Petr Department of Measurement and Control Faculty of Electrical Engineering and Informatics VŠB-Technical University of Ostrava Ostrava Czech Republic

ISBN: (纸本)9783902661418

This paper presents the computer image processing system for robot-soccer application. It presents and explains the main parts of robot-soccer image processing: image format conversion, pitch filtering, recognition of ball, recognition of color segments, and matching groups of segments with the robots. It also explains the main principles of image processing optimization: image data reduction, code optimization, and multi-core processors utilization. © 2009 IFAC.

关键词： Robots

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Reactor furnace control using artificial neural networks and genetic algorithm

Reactor furnace control using artificial neural networks and...

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International Conference on Applied Electronics, AE

作者： Petr Dolezel Jan Mares Faculty of Electrical Engineering and Informatics Department of Process Control University of Pardubice Pardubice Czech Republic Czech Republic

Reactor furnace control design is described in this paper. Reactor furnace, as controlled plant, is significantly nonlinear system and control objectives are strict. Thus, special control technique has to be applied. In this case, discrete PID controller tuned by artificial intelligence techniques is chosen. After reactor furnace description and first principle model derivation, the control method is closely defined. Then, nonlinear neural model of the furnace is designed and control loop is connected. Lastly, control performance is shown and compared to performance derived by conventional control method.

关键词： Inductors Furnaces Artificial neural networks Genetic algorithms Nonlinear control systems control systems control design Nonlinear systems Three-term control Artificial intelligence

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Robust Proportional-Integral control of a laboratory model using Programmable Logic controller SIMATIC S7-300

Robust Proportional-Integral control of a laboratory model u...

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6th IFAC Symposium on Robust control Design, ROCOND'09

作者： Matušů, Radek Vaneková, Katarína Prokop, Roman Bakošová, Monika Department of Automation and Control Engineering Faculty of Applied Informatics Tomas Bata University in Zlín Nad Stráněmi 4511 76005 Zlín Czech Republic Department of Information Engineering and Process Control Faculty of Chemical and Food Technology Slovak University of Technology in Bratislava Radlinského 9 81237 Bratislava Slovakia

ISBN: (纸本)9783902661456

The main aim of the contribution is to present a possible approach to design of simple Proportional-Integral (PI) robust controllers and subsequently to demonstrate their applicability during control of a laboratory model with uncertain parameters through the Programmable Logic controller (PLC) SIMATIC S7-300 by Siemens Company. The proposed and utilized synthesis consists of two steps - the former one is a determination of controller parameters area, which ensures the robustly stable control loop and which is based on the computing/plotting the stability boundary locus while the latter one lies in the final choice of the controller itself relying on algebraic techniques. The basic theoretical parts are followed by laboratory experiments in which the 3rd order nonlinear electronic model has been successfully controlled in various working points. © 2009 IFAC.

关键词： Programmable logic controllers

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