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IMPLEMENTATION OF CONSTRAINED PREDICTIVE OUTER-LOOP controlLERS: APPLICATION TO A BOILER control SYSTEM

IFAC Proceedings Volumes 2002年第1期35卷 145-150页

作者： Fernando Tadeo Teresa Alvarez Mike Grimble Ramon Vilanova Departamento de Ingenieria de Sistemas y Automática Facultad de Ciencias. Universidad de Valladolid. 47011 Valladolid Spain Tlf:+34 983 423566 Fax:+34 983 423161 Industrial Control Centre Strathclyde University United Kingdom Automatic Control and Systems Engineering Group Dept. of Computer Science Universitat Autonoma de Barcelona 08193 Bellaterra – Barcelona Spain

This paper addresses the problem of implementing predictive controllers for supervisory level control systems. In this configuration the manipulated variables calculated by the Predictive controller are used as command signals for the Distributed control Systems, which provide references to the operator-tuned local PID controllers that act on the physical system. This structure introduces the problem of loosing of performance if the inner-loop controllers are re-tuned. The paper discusses the solution to this problem based on the use of a two-degrees-of-freedom structure in the inner loop, that separates open and closed-loop properties. Both design guidelines and robustness issues are discussed.

关键词： Supervisory control Predictive control

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Nurse scheduling system using bacterial evolutionary algorithm hardware

Nurse scheduling system using bacterial evolutionary algorit...

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Proceedings of the 2002 28th Annual Conference of the IEEE industrial Electronics Society

作者： Miwa, Masahiro Matsuzaki, Motoaki Okuma, Shigeru Inoue, Takeshi Furuhashi, Takeshi Electron. Control DIV Res. Devmt. Rinnai Corporation Nishi-Haccho Akita Oguchi Niwa Aichi 480-0132 Japan DesigNET INC. 1-118 Kifune Meitou-ku Nagoya Aichi 465-0058 Japan Dept. of Elect. Eng. Nagoya University Nagoya Indust. Sci. Res. Inst. Furo Chigusa Nagoya Aichi 464-8603 Japan Dept. of Elect. Eng. Nagoya University Furo Chigusa Nagoya Aichi 464-8603 Japan Dept. of Information Engineering Mie University 1515 Kamihama-cho Tsu Mie 514-8507 Japan

Nurse Scheduling Problem is one of combinatorial optimisation problems, and it is difficult to search for optimal solutions. This paper describes that Bacterial Evolutionary Algorithm (BEA), which is one of Evolutionary Algorithms, is applied to search for the optimal solutions of nurse schedules. It takes a large amount of computation time for the scheduling. The nurses scheduling system is implemented on a hardware executed BEA for acceleration, and the system performs in real time.

关键词： Scheduling

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Multi-fingered haptic interaction in a virtual prototyping environment

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Systems Science 2001年第4期27卷 9-22页

作者： Kron, A. Schmidt, G. Dept. of Electrical Engineering Inst. of Automatic Control Eng. Technische Universität Munchen München Germany

The majority of current Virtual Prototyping (VP) systems are capable of providing high fidelity visual feedback only, leaving users in a more or less passive role. This paper discusses an upgrading of the visual feedback by haptic feedback. By allowing the user to interact with objects in a Virtual Environment (VE) with his/her hands and fingers such an advanced VP system permits them to play an active role. For the purposes of upgrading a wrist/finger kinesthetic display as well as a vibrotactile and temperature globe were developed. The combination of both devices leads to a novel haptic human system interface. This paper describes the interface hardware and the corresponding haptic rendering algorithms for generating a high fidelity haptic feedback from a VP environment. Moreover, experimental results are reported concerning the performance of the various haptic displays as well as the quality of the generated haptic sensations. An outlook to future multimodal VP techniques is given.

关键词： Human computer interaction

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On state and parameter estimation via innovation representation with applications to aquatic ecosystems 6

On state and parameter estimation via innovation representat...

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6th European control Conference, ECC 2001

作者： Kolemishevska-Gugulovska, T.D. Dimirovski, G.M. Stankovski, M.J. Dept. of Automation and Systems Engineering Faculty of Electrical Engineering SS Cyril and Methodius University SkopjeMK-91000 Macedonia Inst. of Automatic Control and El. Drives Faculty of Technical and Natural Science Johannes Kepler University Altenbergerstr. 69 LinzA-4040 Austria

ISBN: (纸本)9783952417362

The problem of simultaneous state and system parameter estimation for aquatic ecosystems is considered in this paper. This problem has been solved through the identification of an innovation dynamical model representation of the underlying process within the hydrological cycle of the ecosystem basin. A recursive prediction error (RPE) algorithm is derived for the joint system parameter and state estimation through minimization of the innovation variance (MIV). On the grounds of the case study on Ohridean Lake using recorded data by the Hydro-meteorological inst.tution a comparison analysis has been carries out between the methods of innovation variance minimization and of extended non-linear Kalman filter. © 2001 EUCA.

关键词： Aquatic ecosystems

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On simulation based analysis and synthesis of hierarchical network sturctures 6

On simulation based analysis and synthesis of hierarchical n...

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6th European control Conference, ECC 2001

作者： Tanevska, Dijana J. Dimirovski, Georgi M. Stankovski, Mile J. Jing, Yuanwei Makedonski Telekomunikacii AD Orce Nikolov Str. b.b. SkopjeMK-91000 Macedonia Inst. of Automation and Systems Engg. Faculty of Electrical Engg. SS Cyril and Methodius University SkopjeMK-1000 Macedonia Department of Computer Engg. Faculty of Engineering DOGUS University Kadikoy-IstanbulTR-81010 Turkey Dept. of Automatic Control and Control Eng. School of Information Science and Engineering Northeastern University Shenyang Liaoning110006 China

ISBN: (纸本)9783952417362

Analysis of complex systems such as hierarchically structured network systems that are employed in modelling and analysis various aspects and issues of control and management in telecommunications is investigated. Theory of graphs and binary matrices appear to be most suitable tools for modelling the overall structure of complex systems, in general, and of systemic hierarchies, in particular. A systematic methodology has been developed for computer simulation analysis and detecting general hierarchies in communications networking as well as for synthesis of system hierarchies. This methodology is an improved extension of Warfield's technique. © 2001 EUCA.

关键词： Discrete event simulation

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Abstracts of presentations at the 18th Conference of the Entomological Society of Israel - May 18, 2000 - ARO, The Volcani Center, Bet Dagan, Israel

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PHYTOPARASITICA 2001年第1期29卷 51-89页

作者： [Anonymous] Dept. of Cell and Animal Biology The Hebrew University of Jerusalem Jerusalem Israel Dept. of Entomology Israel Dept. of Chemistry The Volcani Center ARO Bet Dagan Integrated Pest Management Fruit Crops Experiment Station Agriculture Company in Upper Galilee Kibbutz Yiron Ministry of Agriculture and Rural Development Extension Service Qiryat Dept. of Stored Products Pheromone Research Lab. ARO The Volcani Center Bet Dagan Israel Div. of Bioresource and Bioenvironmental Sciences Graduate School Kyushu University Fukuoka Japan Mitrani Dept. for Desert Ecology Blaustein Institute for Desert Research Ben-Gurion University of the Negev Sede Boqer Campus Israel Dept. of Chemistry University of Hamburg Germany Dept. of Entomology ARO The Volcani Center Bet Dagan Dept. of Zoology Faculty of Life Science Tel-Aviv University Tel Aviv Israel Plant Protection and Inspection Services Ministry of Agriculture and Rural Development Bet Dagan Israel Carmel Mizrahi Rishon LeZiyyon Ministry of Agriculture and Rural Development Extension Service Rehovot Israel Agricultural Department Agan Chemical Manufacturers Ashdod Israel Dept. of Entomology ARO Gilat Research Station M.P. Negev Israel Entomology Laboratory Ministry of Health Jerusalem Israel Kimron Veterinary Institute Bet Dagan Israel USDA/ARS Gainesville USA Dept. of Stored Products ARO The Volcani Center Bet Dagan Israel Dept. of Plant Protection Southwest Agricultural University Chonqing China Makliteshim Chemical Works Ltd. Be’er Sheva Israel Dept. of Entomology ARO The Volcani Center Bet Dagan Israel Jerusalem Bet Dagan Israel Plant Protection Division Extension Service Ministry of Agriculture and Rural Development 1 ha ’Hamaqim District Bet Dagan Dept. of Plant Science Faculty of Life Science Tel-Aviv University Tel Aviv Israel Dept. of Plant Sciences Tel-Aviv University Tel Aviv Vitality Biotechnologies (Israel) Ltd. Carmel Industrial Park Tirat HaCarmel Israel Max-Planck-Institut Cologne

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Constrained iterative learning control of liquid slosh in an industrial packaging machine

Constrained iterative learning control of liquid slosh in an...

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IEEE Conference on Decision and control

作者： M. Grundelius B. Bernhardsson Dept. of Autom. Control Lund Inst. of Technol. Sweden Department of Automatic Control Lund Institute of Technology Lund Sweden

ISBN: (纸本)0780366387

Considers the problem of moving a container with liquid without too much slosh in an industrial packaging machine, There is no measurement of the slosh available in the machine to use for control, it is however possible to measure the slosh in a testbed. The problem is to determine the shape of the open loop acceleration reference that is programmed in the motion control system that controls the movement of the containers. In the paper the acceleration reference is calculated using iterative learning control where the results of an experiment are used to refine the acceleration reference to be used in the next iteration.

关键词： Open loop systems Acceleration Containers Shape control Motion control Electrical equipment industry industrial control Packaging machines Testing control systems

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Comparison of output feedback controls using ANN for mechanical systems

Comparison of output feedback controls using ANN for mechani...

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Annual Conference of industrial Electronics Society

作者： M. Yamakita P. Chen T. Iwata Dept. of Control & Syst. Eng. Tokyo Inst. of Technol. Japan Department of Control and Systems Engineering Tokyo Institute of Technology Meguro Tokyo Japan

Two adaptive output feedback control schemes are presented for output tracking of a class of mechanical systems. In the first scheme Gaussian RBF neural networks are used to adaptively compensate for the plant's nonlinearities. The networks weights are adapted by using a Lyapunov-based design. A parameter projection method and high-gain observer are used in this method to achieve semi-global uniform ultimate boundedness. In the second scheme, the structure of mechanical dynamic equation is considered, and the same Gaussian RBF neural networks are used to approximate the energy function 'K' and 'U', in which we need not to consider the system's size, and it is shown that better tracking results are achieved.

关键词： Output feedback control systems Mechanical systems Artificial neural networks Neural networks Adaptive control Programmable control Nonlinear control systems MIMO Algorithm design and analysis

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Application of a genetic algorithm in triangulation of a 3-D object surface

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International Journal of Computers and Applications 2000年第2期22卷 73-77页

作者： Zhenyu, Chen Mbede, J.B. Yan, Zhou Dehua, Li Hanping, Hu State Commn. Res. Open Lab. Image P. Inst. Pattern Recog. Artif. Intell. Huazhong Univ. of Sci. and Technol. 430074 Wuhan China Intelligent Contr. and Robotics Lab. Dept. of Contr. Sci. and Engineering Huazhong Univ. of Sci. and Technol. 430074 Wuhan China Second Artillery Institute Huazhong Univ. of Sci. and Technol. Inst. Pattern Recog. Artif. Intell. Huazhong Univ. of Sci. and Technol. Second Artillery Institute China Wuhan University China Artificial Intelligence Department University of Edinburgh Inst. of AI and Pattern Recognition Huazhong Univ. of Sci. and Technol. China Cogn. Sci. Natl. Key Found. Res. P. Douala University Cameroon Tübingen University Germany Automatic Control Laboratory Darmstadt University Department of Service Cameroon Min. of National Education Robotics Laboratory Huazhong Univ. of Sci. and Technol. Wuhan China Assoc. Connectionnistes These-ACTH Rennes France IEEE Soc. of Robotics and Automation IEEE Society of Control Systems IASTED Assoc. Jeunes Chercheurs Robotique France Navy University of Engineering China Huazhong Univ. of Sci. and Technol. China Department of Computer Science Airforce Radar Acad. of Engineering China Inst. of P.R and AI Huazhong Univ. of Sci. and Technol.

This paper proposes a genetic-based algorithm for surface reconstruction of three-dimension (3-D) objects from a group of contours representing its section plane lines. The algorithm can optimize the triangulation of the surface of 3-D objects with a multi-objective optimization function to meet the needs of a wide range of applications. Further, a new crossover operator for triangulation and a new 3-D quadrilateral mutation operator are also introduced.

关键词： Object recognition

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A Reliable control System for an Underwater Hidrojet Explorer Camera

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IFAC Proceedings Volumes 1999年第2期32卷 8261-8266页

作者： J. Amat R. Villà J. Aranda Institut de Robòotica Industrial IRI (UPC-CSIC) Dept. Automatic Control and Computer Engineering (UPC). Pau Gargallo 5. 08028 Barcelona Spain

Access to restricted spaces underwater requires a small unencumbered camera. A low cost solution has been envisaged. It consists of an hermetic capsule enclosing the camera and lights, joined to the host by an umbilical. Along the umbilical go six water carrying ducts. Three of them end at backwards pointing nozzles located at the capsule body. The jets of water flowing from the nozzles are controlled and their forces allow some restricted positioning of the camera. Another three ducts end at nozzles located some distance up the umbilical, and allow greater maneuverability.

关键词： Marine systems stereovisions tracking systems

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