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SYMP ON LOW COST AUTOMATION

作者： COLOMBI, S ZOIA, R Swiss Federal Inst of Technology Lausanne Switzerland

This paper describes some powerful programs which are very useful for the design of digital controls. These programs work either on IBM personal computers and on VAX computers. This increases the potentialities of use... 详细信息

ISBN: (纸本)0080378668

关键词： control engineering computer applications MODELING controlLER CHOICE DIMENSIONING SIMULATION QUANTIZATION NONLINEARITY

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A description of an on-line statistical quality control package

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Annual Review in Automatic Programming 1985年第PART 1期13卷 9-16页

作者： Rushing Jr., J.R United States

control charting and other statistical quality control techniques have been used by quality control departments in an off-line mode for many years, resulting in significant reductions in process variability. SETPOINT has developed an on-line statistical quality control package which employs these same techniques in real time. This package provides real-time statistical quality control functions such as control charting and alarming. © 1985.

关键词： control engineering computer applications minicomputers on-line operation process control quality control

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Digital computer control Experiments in the control Group of Eth-Zuerich

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IFAC Proceedings Volumes 1981年第2期14卷 3375-3381页

作者： M. Mansour W. Schaufelberger Institut für Automatik und Industrielle Elektronik der ETH ETH-Zentrum CH-8092 Zürich Switzerland

Experiments that have been realized in a digital computer control laboratory are described in this paper. A set of 17 experiments that are used in undergraduate and graduate laboratory assignments as well as in research are briefly described. Three experiments, namely a coin exchanging machine, an inverted pendulum and the tension and speed control system in a tare transporting mechanism are then presented in some detail. The experience that has been obtained from running the laboratory for many years is summarized.

关键词： Education Teaching control engineering computer applications computer control laboratory computer control experiments

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Automatic Routing and Scheduling of a Fleet of Vehicles Providing Door-to-Door Service For Handicapped People

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IFAC Proceedings Volumes 1983年第4期16卷 89-95页

作者： Michel Lahaut Civil Engineer in Applied Mathematics Erpigny 5460 Erezée Belgium

Recently much debate has been generated over the issue of public transportation service for handicapped people. In this context, it is the purpose of this paper to present an unpublished algorithm which has been recently implemented to control by computer a fleet of vehicles providing a door-to-door service for handicapped people in Brussels. A prospective customer makes his wishes known by making a public telephone call to the control centre of the system 48 hours in advance. So the set of customers and their requirements are known in advance. The development of effective routes and schedules for the vehicles is made for the whole day and will not change. The algorithm allots the demands for transportation in a way that total transported persons within a day is maximized. At the end of the paper, we will consider the extension of the algorithm to the real time allotment.

关键词： Demand responsive transportation systems dial-a-ride control engineering computer applications computer applications heuristic programming operations research transportation control transportation optimal research techniques

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control of Fermentation Processes as Variable Structure Systems

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IFAC Proceedings Volumes 1991年第12期24卷 183-188页

作者： K.B. Konstantinov M. Kishimoto T. Yoshida International Center of Cooperative Research in Biotechnology Japan Faculty of Engineering Osaka University Yamada-oka Suita-shi Osaka 565 Japan

An essential pending problem in the modeling and control of fermentation processes is the variability of biological systems, expressed as predictable or unpredictable structural alterations in the control plant. Such phenomena, naturally or artificially induced, require flexible alteration of control system structure by proper switching to one or another control strategy. In order to overcome the rigid restriction imposed upon the plant structure by the conventional control approach, we propose here a two-level hierarchical scheme, which provides the control system with a kind of structural adaptability. In the second level of the system, which operates in the structural space of the plant and performs intelligent functions, the current plant structure is recognized as an element of a finite set of structures defined on the base of expert knowledge. In the first level, which works in the state space of the plant, the control strategy relevant to the current plant structure is picked out from a defined pool and the corresponding control action is calculated. This approach has been realized as a real-time software system intended for control of various fermentation processes.

关键词： Process control varying structures large-scale systems self-adjusting systems pattern recognition artificial intelligence control engineering computer applications fermentation processes fuzzy sets

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computer Simulation Oriented Models of Concurrently Flowing Processes

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IFAC Proceedings Volumes 1987年第12期20卷 93-98页

作者： Z. Banaszak Institute of Technical Cybernetics Technical University of Wroclaw Wroclaw Poland

The complexity of modern industrial installations requires the utilization of interconnected programmable logic controllers. A tool is necessary for the formal specification and validation of the control procedures, altogether with methods allowing a direct implementation of these specifications in the system, aimed at the computer simulation of process flow performances. This paper deals with a Petri net approach to the automatic design of control programs supervising concurrent, pipeline-like flowing processes. Its objective lies in the formal statement of the conditions sufficient for the design of a class of net models reflecting all admissible controls of processes flow. Shortcomings and benefits of the introduced approach are discussed as well as its further developments are pointed out.

关键词： Modelling parallel processing Petri net control engineering computer applications computer-aided process planning

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Dynamic Analysis of the Air Gas Path of Fossil Fuel Power Plants

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IFAC Proceedings Volumes 1984年第3期17卷 29-36页

作者： D. Corno S. Quatela A. Zizzo ANSALDO BREDA Department Viale Sarca 336 20126 Milano Italy ENEL Italian Electricity Board R & D Dept. Automation and Computing Research Center Via A. Volta 1 20093 Cologno Monzese Italy

In this work a dynamic analysis for the air-gas path of a balanced draft boiler is presented. As is well known, in this part of the plant large and rapid pressure variations can arise in particular situations (for instance in case of fuel trip) which can cause damage to mechanical structures. To achieve a basis of evaluation of these phenomena, a mathematical model of the air-gas system has been developped; the system has been divided into subsystems (fans, air and gas ducts, furnace, air preheaters, dampers) and for each of them a first principles mathematical model has been written. The submodels have then been coupled together to obtain the description of the whole system. This task has been accomplished automatically by means of a suitable “computer aided modelling” code, described in detail in (Marcocci and Spelta, Owing to this modular approach, a wide range of possible plant configurations can be represented. This paper first describes the models of the principal subsystems and the criteria which have been followed to represent with acceptable accuracy the main phenomena involved; a practical application to the air gas path of a real power plant in then presented, and the results obtained in the most critical situations are discussed, with particular attention to operating strategies and control system evaluation.

关键词： Power generation modular modelling air-gas path dynamic response control engineering computer applications pressure control

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Advanced control Room in Nuclear Plants (N4 PWR)

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IFAC Proceedings Volumes 1988年第11期21卷 307-312页

作者： C. Philipps G. Guesnier A. Kinder SEMA.METRA Chemin du vieux chêne 38240 Meylan France EDF. SEPTEN 12/14 avenue Dutrievoz 69628 Villeurbanne France EDF.REC 2 avenue du Général de Gaulle 92141 Clamart France

A control room completely computerized will operate the new French N4 series of PWR's nuclear plants (1, 400 MW); this paper, after having described the main goals of the system, presents its architecture (and specially the control room and the operator console), gives some key-figures of this system, and finally shows the main choices done for its development.

关键词： Nuclear plants Man-machine systems control engineering computer applications

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CADCS Developments in Europe

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IFAC Proceedings Volumes 1988年第8期21卷 65-73页

作者： Ad van den Boom Department of Electrical Engineering Eindhoven University of Technology P.O. Box 513 5600 MB Eindhoven The Netherlands

Recent developments in the area of CADCS in Europe are reviewed. Emphasis is given to activities dealing with the construction of control libraries and interactive CADCS packages, as well as to other research activiti... 详细信息

关键词： computer-aided system design interactive computing control engineering computer applications computer control control systems design packages

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Development of Strip Temperature control for the Continuous Annealing and Processing Line

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IFAC Proceedings Volumes 1984年第2期17卷 1725-1730页

作者： K. Yui T. Sato H. Ikegami K. Suehiro Electrical Automation and instrumentation division Plant Engineering and Technology Bureau Nippon Steel Corporation 6-3 Otemachi 2-chome Chiyoda-ku Tokyo 10 Japan Rolling Plant Engineering Division-II Plant Engineering and Technology Bureau Nippon Steel Corporation 6-3 Otemachi 2-chome. Chiyoda-ku Tokyo 100 Japan Engineering and Design Office Hirohata Works Nippon Steel Corporation 6-3 Otemachi 2-chome. Chiyoda-ku Tokyo 100 Japan

Recently five conventional batch processes after the cold rolling process have been replaced by the continuous annealing and processing line (C.A.P.L.) for cold rolled sheets of mild steel and high strength steel in order to obtain higher productivity, labor savings, energy savings and the manufacture of new products. In this remarkable process, the strip heat cycle must be mainteined at a target strip temperature from the metallurgical point of view. This paper covers the process computer control system of the C.A.P.L., the strip temperature control system which utilizes a Kalman-Bucy filter, and the adaptive control method for improving the control performance of the strip temperature control system.

关键词： Steel industry control engineering computer applications Temperature control Optimal filtering Adaptive control

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