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作者： Ferkl, Lukáš Meinsma, Gjerrit Sládek, Oto Department of Control Engineering Faculty of Electrical Engineering Czech Technical University in Prague Technická 2 166 27 Praha 6 Czech Republic Department of Applied Mathematics Faculteit EWI University of Twente P.O. Box 217 7500 AE Enschede Netherlands Kybertec Ltd. Tovární 1112 537 01 Chrudim Czech Republic Center for Applied Cybernetics Institute of Information Theory and Automation Academy of Sciences of the Czech Republic Pod vodárenskou věží 4 182 08 Praha 8 Czech Republic

A control scheme for highway tunnels is proposed based on a static model of the highway tunnel. The controller is designed to keep the exhaust levels inside the tunnel below given limits. The controller is derived in two stages. First, a controller for an isolated ventilation section is found. Then a controller for a complex tunnel is obtained and the control is optimized by means of linear programming. The control is then simulated on a dynamical model of a highway tunnel.

关键词： controllers

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Tunnel ventilation simulation of the city ring in Prague

Tunnel ventilation simulation of the city ring in Prague

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作者： Ferkl, Lukáš Sládek, Oto Pořízek, Jan Department of Control Engineering Faculty of Electrical Engineering Czech Technical University in Prague Technicka 2 166 27 Praha 6 Czech Republic Kybertec S.r.o Tovární 1112 537 01 Chrudim Czech Republic Satra S.r.o Sokolska 32 120 00 Praha 2 Czech Republic Center for Applied Cybernetics Institute of Information Theory and Automation Academy of Sciences of the Czech Republic Pod vodarenskou věží 4 182 08 Praha 8 Czech Republic

A detailed simulation has been proposed and implemented for a complex road tunnel to be constructed in Prague, Czech Republic. The work brings new approach to functional and spatial decomposition of traffic, ventilation and exhaust tunnel subsystems allowing a simulation of dynamics. The discretization method provides a highly realistic and detailed behavior of the tunnel system. In addition, simulation of emergency situations is available. The simulation has been implemented in MATLAB.

关键词： Discrete event simulation

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Delay-dependent stability condition for uncertain linear 2-D state-delayed systems

Delay-dependent stability condition for uncertain linear 2-D...

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IEEE Conference on Decision and control

作者： Wojciech Paszke James Lam Krzysztof Galkowski Shengyuan Xu Anton Kummert Institute of Control and Computation Engineering University of Zielona Góra Zielona Góra Poland Department of Mechanical Engineering University of Hong Kong Pokfulam Road Hong Kong Department of Automation Nanjing University of Science and Technology of PLA Nanjing China Department of Automation Nanjing University of Science and Technology Nanjing P. R. China Faculty of Electrical Information and Media Engineering University of Wuppertal Wuppertal Germany

ISBN: (纸本)1424401704

This paper addresses the problem of robust stability for uncertain two-dimensional systems with delays in the state. The uncertainty is assumed to be of norm-bounded form. To solve this problem, the Lyapunov second method is used. The resulting condition is written in terms of linear matrix inequalities and it is dependent on the size of delays. This fact allows us to reduce the conservatism in the stability analysis of two-dimensional systems with state delays. A illustrative example is given to illustrate the theoretical developments

关键词： Delay systems Linear systems Symmetric matrices Delay lines control systems Robust stability Linear matrix inequalities USA Councils Two dimensional displays Uncertainty

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Implementation of Industrial Robot Force control Case Study: High Power Stub Grinding and Deburring

Implementation of Industrial Robot Force Control Case Study:...

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2006 IEEE/RSJ International Conference on Intelligent Robots and Systems

作者： A. Robertsson T. Olsson R. Johansson A. Blomdell K. Nilsson M. Haage B. Lauwers H. De Baerdemaeker T. Brogardh H. Brantmark Department of Automatic Control Lund University Hospital Lund Sweden Dept. of Automatic Control Lund University Sweden Dept. of Computer Science Lund University Sweden Department of Computer Science Lund University Hospital Lund Sweden Dept. of Mechanical Engineering Faculty of Engineering Heverlee Belgium Department of Mechanical Engineering Heverlee Belgium ABB Automation Technologies - Robotics Västerås Sweden

In this paper, the results from a joint industry-academia project in industrial robotic force control are presented. The extension and implementation of an external sensor system for an industrial robot system, which can be used for high-bandwidth force control, are described. Results from two industrial applications using the system are presented, a stub grinding application using a new compliant grinding end-effector integrated with the robot control system, and a deburring application with a stiff tool requiring high-bandwidth force control in six degrees of freedom. Using the system an easily reconfigurable control structure was achieved, which was able to control contact forces with a sampling bandwidth of an order of magnitude higher than for conventional robot controllers

关键词： Industrial control Service robots Force control Deburring Electrical equipment industry Robot sensing systems control systems Robot control Sensor systems Sampling methods

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Delay-dependent stability of 2D state-delayed linear systems

Delay-dependent stability of 2D state-delayed linear systems

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IEEE International Symposium on Circuits and Systems (ISCAS)

作者： W. Paszke J. Lam K. Galkowski Shengyuan Xu E. Rogers A. Kummert Institute of Control and Computation Engineering University of Zielona Góra Zielona Gora Poland Department of Mechanical Engineering University of Hong Kong Hong Kong China Department of Automation Nanjing University of Science and Technology of PLA Nanjing China Faculty of Electrical Information and Media Engineering University of Wuppertal Wuppertal Germany School of Electronics and Computer Science University of Southampton Southampton UK

This paper addresses the problem of stability for two-dimensional systems with delays in the state. To solve this problem, the Lyapunov second method is used. The resulting condition is written in terms of linear matrix inequalities and it is dependent on the size of delays. This fact allows us to reduce the conservatism in the stability analysis of two-dimensional systems with state delays. A simulation example is given to illustrate the theoretical developments

关键词： Stability Linear systems Delay systems Symmetric matrices control systems Linear matrix inequalities Delay lines Automatic control control engineering computing Mechanical engineering

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Reversible phase transitions in the pseudomorphic 7×3-hex In layer on Si(111)

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Physical Review B 2006年第3期74卷 035436-035436页

作者： A. A. Saranin A. V. Zotov M. Kishida Y. Murata S. Honda M. Katayama K. Oura D. V. Gruznev A. Visikovskiy H. Tochihara Institute of Automation and Control Processes 690041 Vladivostok Russia Faculty of Physics and Engineering Far Eastern State University 690000 Vladivostok Russia Department of Electronics Vladivostok State University of Economics and Service 690600 Vladivostok Russia Department of Electronic Engineering Faculty of Engineering Osaka University Suita Osaka 565-0871 Japan Research Center for Ultra-High Voltage Electron Microscopy Osaka University Ibaraki Osaka 567-0047 Japan Department of Molecular and Material Sciences Kyushu University Kasuga Fukuoka 816-8580 Japan

Using scanning tunneling microscopy, reversible phase transitions have been detected in the modulated pseudomorphic In monolayer on the Si(111) surface. It has been found that the room-temperature quasihexagonal 7×3 structure is transformed into the 7×7 structure during cooling in the temperature range from 265to225K. Further cooling results in developing long-range modulations in the In layer, including formation of the chevron-type structure with 67×7 periodicity, the ordered arrays with regular antiphase domain boundaries with local 37×7, and 27×7 periodicity and the chained-ring structure with 1033×4033 periodicity, which is believed to originate from the 533×533 structure occurring at room temperature near surface defects and at domain boundaries of the original 7×3−In phase.

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Atomic dynamics of In nanoclusters on Si(100)

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Physical Review B 2006年第12期74卷 125304-125304页

作者： A. A. Saranin A. V. Zotov I. A. Kuyanov M. Kishida Y. Murata S. Honda M. Katayama K. Oura C. M. Wei Y. L. Wang Institute of Automation and Control Processes 690041 Vladivostok Russia Faculty of Physics and Engineering Far Eastern State University 690000 Vladivostok Russia Department of Electronics Vladivostok State University of Economics and Service 690600 Vladivostok Russia Department of Electronic Engineering Faculty of Engineering Osaka University Suita Osaka 565-0871 Japan Research Center for Ultra-High Voltage Electron Microscopy Osaka University Ibaraki Osaka 567-0047 Japan Institute of Atomic and Molecular Sciences Academia Sinica P.O. Box 23-166 Taipei Taiwan Republic of China

Using scanning-tunneling microscopy and first-principles total-energy calculations, we have considered the structural properties of the so-called doped clusters formed by depositing additional 0.05 monolayer of In onto the 4×3-periodicity magic-cluster array in the In∕Si(100) system. Low-temperature STM observations have revealed that most of the doped clusters have an asymmetric shape. According to the total-energy calculations, these clusters have plausibly Si6In8 composition. In such a cluster, one of the In atoms is mobile and can hop between four equivalent sites within a cluster. The hopping between sites, located in the different 2a×3a halves of the cluster, is characterized by the barrier of about 0.7eV, and this hopping becomes frozen at 55K. In contrast, the hopping between the neighboring sites within the same cluster half persists up to very low temperatures, as the barrier height here is an order of magnitude lower. Due to the above structural properties, the doped asymmetric Si6In8 cluster can be treated as a promising switch, logic gate, or memory cell of the atomic-scale size.

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EDUSCA (EDUCATIONAL SCADA): FEATURES AND APPLICATIONS

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IFAC Proceedings Volumes 2006年第6期39卷 614-619页

作者： Ra#uAl Alves Santos Julio E. Normey-Rico Alejandro Merino Gómez Cesar de Prada Moraga Center of Sugar Tecnology. University of Valladolid. Edificio Alfonso VIII 47011. Valladolid. Spain Department of Automation and Systems. Federal University of Santa Catarina. 88040-900 CTC-UFSC. Florianópolis-SC Brazil Department of Systems Engineering and Automatic Control. University of Valladolid. Faculty of Sciences c/ Real de Burgos s/n 47011 Valladolid Spain

This paper presents EDUSCA, an EDUcational SCAda with OPC data access. EDUSCA was specially designed for automatic control education, research and operator training purposes. The developed system takes advantage of the facilities offered by the OPC communication architecture. The system allows the students to face real practical problems, could be used to train operators in plant supervision and also allows the implementation of research functionalities. Their main advantages of EDUSCA are: (i) it can be connected to any plant whenever it includes OPC communications; (ii) it is free of licenses, thus it can be installed in many computers as necessary; (iii) it can be adapted to each application requirements and (iv) it allows the implementation of a diverse set of functionalities, as for example, control algorithms.

关键词： SCADA Supervisory control Process control Training control Education

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Study of a high-accuracy epipolar geometry restoration method

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Gaojishu Tongxin/Chinese High Technology Letters 2006年第1期16卷 51-54页

作者： Gao, Hongwei Wu, Chengdong Li, Bin Robotics Laboratory Shenyang Institute of Automation Chinese Academy of Sciences Shenyang 110016 China Graduate School of Chinese Academy of Sciences Beijing 100039 China Information and Control Engineering Faculty Shenyang Jianzhu University Shenyang 110168 China

According to the parallel binocular vision system, a method that uses common calibration board to realize automatic and accurate matching of the image corner pairs was developed, and the epipolar geometry of the system was restored accurately. The coiner detection algorithm, the avoidance of the degeneration problem and the fundamental matrix iterative optimization algorithm based on rank-2 constraint were introduced. Experiment results proved the validity of the proposed method.

关键词： Binocular vision Corner detect Degeneration problem Epipolar geometry Iterative optimization

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HIGH-RISE BUILDINGS UNDER EARTHQUAKE EXCITATION: STABILIZATION USING SMC

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IFAC Proceedings Volumes 2006年第16期39卷 776-781页

作者： Georgi M. Dimirovski Jun Zhao Miomir K. Vukobratovic Dogus University Faculty of Engineering Dept. of Computer Engineering Acibadem Zeamet Sk. 21 Kadikoy TR-34722 Istanbul Rep. of Turkey Fax: ++90-216-327-9631 Tel: ++90-216-327-1104 SS Cyril and Methodius University Faculty of Electrical Engineering Rugjer Boskovic b.b. Karpos II MK-1000 Skopje Rep. of Macedonia Northestern University School of Information Science and Engineering Institute of Control Science Shenyang Liaoning CN-110004 P. R. of China Fax: ++86-24-8367-2273 Tel: ++86-24-2389-3000 Mihailo Pupin Institute Laboratory of Robotics & Automation Volgina 15 Karaburma 11000 F. R. Serbia and Montenegro Fax: ++381-11-2775-870 Tel: ++381-11-2774-236

The goal to control the dynamics of high-rise buildings either to ameliorate the damage or prevent their destruction when subject to an earthquake excitation has been subject of extensive research. All known control designs have advantages and disadvantages as well as operating limits. The application of sliding-mode control to controlling earthquake induced vibrations of a multi-story structural system as an active seismic compensation plus base isolation has been investigated. The performance has been compared to the one of traditional industrial controls, and relevant conclusions drawn. Simulation results, carried out using El Centro earthquake acceleration, have shown that the sliding mode control can decrease significantly displacements of the floors.

关键词： Earthquake sliding mode control structural systems vibration control

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