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International Conference on industrial Electronics, control and inst.umentation

作者： S. Ishikawa J.K. Tan Dept. of Mech. & Control Eng. Kyushu Inst. of Technol. Kitakyushu Japan DepartmeKyushu Institute of Technologynt of Mechanical and Control Engineering Kyushu Institute of Technology Kitakyushu Japan

The present paper describes a technique for analyzing a disordered cord. We often put disordered cords in order or undo knots out of necessity. To automate this routine by an intelligent machine, a cord needs to be traced from one end to the other. This paper proposes a technique for realizing the trace employing consistent labeling and a distance index. Image processing of a disordered cord provides the description of the cord by its subareas called cord areas. Relations among the cord areas are formulated in terms of consistent labeling. Solutions of the consistent labeling problem give candidates for possible trace routes and a unique route is found by the calculation of a distance index. Experimental results show satisfactory performance of the proposed technique.

关键词： Labeling Machine intelligence control engineering Paper technology Image segmentation Hoses Joining processes Computer peripherals Intelligent robots Robot vision systems

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Teaching Discrete Event control of Manufacturing Systems

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IFAC Proceedings Volumes 1997年第12期30卷 261-266页

作者： O.C. Pastravanu A. Gürel F.L. Lewis Dept. of Automatic Control and Industrial Informatics Technical University of Iasi Str. Horia 7-9 6600 Iasi Romania Dept. of Electrical and Electronic Engineering Eastern Mediterranean University P.O. Box 95 Gazi Magosa Mersin 10 Turkish Republic of Northern Cyprus Automation and Robotics Research Institute The University of Texas at Arlington 7300 Jack Newell Blvd. S Fort Worth Texas 76118-7115 USA

controller design for Flexible Manufacturing Systems (FMS) is addressed within a systems theory-basea framework, which allows the separation of the workcell (comprised of machines and resources to be controlled), and the controller (consisting of the decision-making scheduler). This point of view is particularly profitable for teaching FMS design to control engineering students, who are familiar with the feedback control principles. The design algorithm uses standard manufacturing engineering tools to produce a rule-based controller that is described mathematically in terms of matrix equations, yielding the Petri net and max/plus representations of the closed-loop FMS. This matrix approach is exploited to develop a MATLAB software which implements new functions for idempotent calculus in the semiring (R∪{-∞},max,+), and offers a large flexibility in changing the operating conditions and design specifications.

关键词： flexible manufacturing systems discrete-event systems Petri-net models max/plus models MATLAB simulation control education

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Ultrasonic detection in robotic environments

Ultrasonic detection in robotic environments

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IEEE International Conference on Robotics and Automation (ICRA)

作者： L. Sobral R. Johansson G. Lindstedt G. Olsson Department Automatic Contlrol Lund Institute of Technology Lund Sweden Dept. of Autom. Control Lund Inst. of Technol. Sweden Department Ind. El. Engineering & Automation Lund Institute of Technology Lund Sweden

Based on information produced by a 200 kHz ultrasonic echo device developed for robotics and other industrial purposes, a method for object identification was developed and is presented in this paper. Interpretation of the echos from the reflecting objects, complexity analysis and information extraction were made by system identification methods such as impulse response analysis and state-space realization. A clustering-type discrimination of different objects based on the echo identification result was made in a subsequent step using the least-squares method. Experimental evaluation showed that the method is effective for object recognition.

关键词： Robot sensing systems Object recognition Service robots Robotics and automation Information analysis System identification Pattern analysis Shape Sensor systems Temperature

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Specification of customer and user requirements in industrial control system procurement projects

Specification of customer and user requirements in industria...

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IEEE International Symposium on Requirements engineering

作者： P. Forsgren T. Rahkonen Department of Industrial Control Systems Royal Institute of Technology Stockholm Sweden Kungliga Tekniska Hogskolan Stockholm SE Dept. of Ind. Control Syst. R. Inst. of Technol. Stockholm Sweden

An appropriate industrial control system is a prerequisite for being competitive in the process, manufacturing, and power industries. As for most software systems, the technical possibilities provided by industrial control systems have grown dramatically during the last ten years. However, the techniques to specify customer and user requirements in terms of functionality, performance, etc. are not very well developed. This often leads to systems which do not fulfil user needs and customer expectations, and/or which are unnecessarily expensive. Guidelines for specification and follow-up of requirements on industrial control systems are given. The guidelines are based on an extensive study of experiences from a number of major users and vendors of these kinds of computer systems. They should be useful for customers and consultants working in procurement projects.

关键词： industrial control Procurement Proposals control systems Guidelines SCADA systems Distributed control Availability Appropriate technology Manufacturing processes

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Graphical stability analysis of a fuzzy control system

Graphical stability analysis of a fuzzy control system

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International Conference on industrial Electronics, control and inst.umentation

作者： R. Katoh T. Yamashita S. Singh Dept. of Control Eng. Kyushu Inst. of Technol. Kitakyushu Japan Department of Control Engineering Kyushu Institute of Technology Kitakyushu Japan

Stability of fuzzy control system is analyzed wherein control system with two inputs and single output is transformed to two inputs and two outputs control system which in turn is transformed to Lure system having a linear plant and nonlinear controller by checking the stability of the linear part of the control system. A new graphical method, which consists of three procedures, has been proposed to analyze the absolute stability of the fuzzy control system. The method is shown correctly using an example, and effect of plant parameters on the stability have also been studied.< >

关键词： Stability analysis Fuzzy control control systems Nonlinear control systems Fuzzy sets control system analysis Fuzzy systems Algorithm design and analysis control engineering Asymptotic stability

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Structured development of industrial control systems for power networks

Structured development of industrial control systems for pow...

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IEEE Conference on control Technology and Applications (CCTA)

作者： G. Ericsson P. Forsgren E. Gyllensward T. Rahkonen KTH Department of Industrial Control Systems Royal Institute of Technology Stockholm Sweden Kungliga Tekniska Hogskolan Stockholm SE Dept. of Ind. Control Syst. R. Inst. of Technol. Stockholm Sweden

Cost efficiency in projects for industrial control systems must be improved. Not only theoretical issues, such as mathematical modeling, are important, but also engineering aspects for proper development, operation, and maintenance have to be considered. In particular, uniform models and methods for development of control systems are needed. In this paper, a structured concept for iterative and incremental development of industrial control systems for power networks, so called SCADA/EMS systems, is proposed. It is based upon an object-oriented approach, which has impact on all the phases of specification, design, and implementation, when developing such a system. Effective addition of new functionality, refinement of the existing one, and/or modification of the internal structure of a control system are supported. The transformation between the design and implementation becomes well known, and the transformation between the specification and the design is facilitated. This will simplify mappings of user and process requirements into the control system.< >

关键词： industrial control control systems Costs Mathematical model Power engineering and energy Object oriented modeling Power system modeling control system synthesis Medical services Refining

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From numerical to symbolic computation-modern perspectives for computer aided education in control engineering

From numerical to symbolic computation-modern perspectives f...

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Mediterranean Electrotechnical Conference (MELECON)

作者： O. Pastravanu M. Voicu T. Marcu C. Lazar Automatic Control Department Gheorghe Asachi Polytechnical Institute Iasi Romania Autom. Control Dept. 'Gh. Asachi' Polytech. Inst. Iasi Romania

The authors describe the stages of a methodology employed to acquaint students in automatic control with the opportunities presented by symbolic calculus in formulating computerized versions for many notable theoretical results, which become powerful design tools. A symbolic mathematics package devoted to control problems was developed. Some illustrative laboratory experiments allow a thorough understanding of the perspectives opened by Al advances.< >

关键词： Computer science education automatic control Reliability theory Software tools Software libraries Calculus Software algorithms Algorithm design and analysis Laboratories Arithmetic

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An improved SSDA applied in target tracking

An improved SSDA applied in target tracking

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International Conference on Pattern Recognition

作者： H. Zhenhua Z. Peiying Dept. of Autom. Control Eng. Nanjing Inst. of Technol. China Department of Automatic Control Engineering Nanjing Institute of Technology China

An improved SSDA (sequential similarity detection algorithm), which may be used to determine similarity in a more efficient manner than the SSDA currently in use, is introduced. The algorithm saves computation time and improves performance compared to the current SSDA. The problem of target tracking, used as an example, and calculation of performance indexes of SSDA are introduced to optimally implement the algorithm. Two series of frame images are simulated from real data to demonstrate the efficiency of the improved SSDA for target tracking.< >

关键词： Target tracking Pixel Image sensors Random number generation Costs Autocorrelation Linear approximation Electrical capacitance tomography Hardware White noise

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EMERGING ROLES OF NIH AND EPA IN THE REGULATION OF RDNA TECHNOLOGY

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BIO-TECHNOLOGY 1983年第9期1卷 757-768页

作者： KORWEK, EL Edward L. Korwek Ph.D. J.D. is associated with the law offices of Keller and Heckman 1150 17th St. N.W. Washington D.C. 20036.REFERENCES Committee on Recombinant DNA "Potential Biohazards of Recombinant DNA Molecules" Nature250: 175 (1974) Proc. Nat. Acad. Sci.71: 2593 (1974) Science185: 303 (1974).|Article|Fed. Regist.48: 24556 (1983).Milewski E. Editor's Note. Recombinant DNA Tech. Bull.4: i (1981).Inside EPA 4 1 (1983). EPA has already held a meeting and published a draft report on the subject of its regulation of this area under the TSCA. EPA "Administrator's Toxic Substances Advisory Committee Meeting" Fed. Regist.48: 8342 (1983) Regulation of Genetically Engineered Substances Under TSCA Chemical Control Division Office of Toxic Substances Office of Pesticides and Toxic Substances Environmental Protection Agency Washington D.C. (March 1982). Congress also recently held a hearing on the subject of existing federal authority over the release of R-DNA-containing organisms into environment. M. Sun Science221: 136 (1983).Sects. 2-30 15 U.S. Code sects. 2601-2629 (1976 and Supp. V 1981). Hereinafter all references in the text to TSCA refer to the section numbers as enacted and not to the corresponding U.S. Code sections.The Administrative Procedure Act specifically states that the reviewing court shall "hold unlawful and set aside agency action findings and conclusions found to be hellip in excess of statutory jurisdiction authority or limitations or short of statutory right. hellip " 5 U.S. Code sect. 706(2)(C) (1976).PHS Act 42 U.S. Code sects. 217a and 241 (1976) Charter Recombinant DNA Advisory Committee Department of Health and Human Services (1982).Korwek E. Food Drug and Cosm. L. J.35: 633 (1980) p. 636.Although DHHS has some authority under Section 361 of the PHS Act to regulate R-DNA materials that cause human disease and are communicable most types of experimentation would not fall into this category. Because of this limitation the Sub committee of the Federal

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Abstracts

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Environmental Management 1977年第1期1卷 67-96页

作者： Frankenfeld, John W. Schulz, Wolfgang McMurty, George J. Petersen, Gary W. May, G. A. Hering, F. S. Schwartz, J. I. Heywood, J. B. Chigier, N. A. Grohse, E. W. Walker, J. D. Colwell, R. R. Petrakis, L. Pergament, H. S. Thorpe, R. D. Schoepf, Richard W. Krzyczkowski, Roman Henneman, Suzanne S. Hudson, Charles L. Putnam, Evelyn S. Thiesen, Donna J. Parks, G. A. McCarty, Perry L. Leckie, J. O. Schrumpf, Barry J. Simonson, G. H. Paine, D. P. Lawrence, R. D. Pyott, W. T. Leh, M. Elders, W. Combs, J. Caplen, T. Harrison, F. L. Wong, K. M. Heft., R. E. Charnell, Robert L. Lehmann, Edward J. Mallon, Lawrence G. Hatfield, Cecile Adams, Gerald H. Johanning, James Talvitie, Antti Noll, Kenneth E. Miller, Terry Smiarowski, Joseph F. Willis, Cleve E. Foster, John H. Schlesinger, Benjamin Daetz, Douglas Lear, Donald U. Smith, Mona F. Hundemann, Audrey S. Crockett, Pernell W. Werner, Kirk G. Carroll, Thomas E. Maase, David L. Genco, Joseph E. Ifeadi, Christopher N. Lowman, F. G. Christensen, S. W. Van Winkle, W. Mattice, J. S. Harrison, Elizabeth A. Barker, James C. Chesness, Jerry L. Smith, Ralph E. Shaheeen, Donald G. Raney, R. Keith Borton, T. Wezernak, C. T. Raney, R. K. Sherwani, Jabbor K. Moreau, David H. Eisenberg, Norman A. Lynch, Cornelius J. Breeding, Roger J. Johnson, J. D. Foster, K. E. Mouat, D. A. Clark, R. Hyden, John William Owen, Wilfred Bayfield, Neil G. Barrow, Graham C. Stolz, Stephanie B. Wienckowski, Louis A. Brown, Betram S. Keyfitz, Nathan Wilson, W. L. Newman, Peter W. G. Bammi, Deepak Bammi, Dalip Goddard, James E. Chisholm, Tony Walsh, Cliff Brennan, Geoffrey Thompson, K. S. Richardson, R. Jensen, Clayton E. Brown, Dail W. Mirabito, John A. Cowing, Thomas G. Binghamton, Suny Siehl, George H. Albrecht, O. W. Alexander, Ariel Barde, Jean -Philippe Darby, William P. McMichael, Francis Clay Dunlap, Robert W. Muckleston, Keith W. Frankenhoff, Charles A. Giulini, Lorenzo T. Wyatt, T. Black, Peter E. Keating, William Thomas Leonard, M. E. Fisher, E. L. Brunelle, M. F. Dickinson, J. E. Pethig, Rudiger Clapham Exxon Research & Engineering Co. Linden Government Research Lab Coast Guard Washington D.C. Department of Transportation Washington D.C. Office For Remote Sensing of Earth Resources. NASA Earth Resources Survey Program Pennsylvania State University Washington D.C. Department of the Navy Washington D.C. Cambridge. Dept. of Mechanical Engineering Massachusetts Inst. of Technology USA Huntsville. School of Graduate Studies and Research Alabama Univ. USA Dept. of Microbiology. Office of Naval Research Maryland Univ. Arlington Research and Development Co. Pittsburgh AeroChem Research Labs. Inc. Princeton Dept. of the Interior Office of Library Services. Bibliographic Series (Final) Washington D.C. Interplan Corp. Santa Barbara Urban Mass Transportation Adm. Washington D.C. Naval Underwater Systems Center Newport Calif. Mercury Project. National Science Found Stanford Univ Washington D.C. Div. of Advanced Environmental Research & Tech. USA Corvallis. NASA Earth Resources Survey Program Oregon State Univ. Washington D.C. Riverside. Inst. of Geophysics and Planetary Physics National Science Foundation California Univ. Washington D.C. Livermore Lawrence Livermore Lab. California Univ. USA Atlantic Oceanographic and Meteorological Labs. National Oceanic and Atmospheric Administration Miami National Technical Information Service Springfield Miami Univ. Coral Gables School of Law National Oceanic and Atmospheric Administration Rockville National Academy of Sciences Office of Sea Grant Washington D. C. School of Law National Oceanic and Atmospheric Administration Office of Sea Grant. Rockville Norman. Dept. of Civil Engineering and Environmental Science. Urban Mass Transportation Administration Oklahoma Univ. Washington D. C. Knoxville.Dept. of Civil Engineering. Federal Highway Administration Tennessee Univ. Washington D. C. Amherst.Water Resources Research Center. Office of Water Research and Technology Massachusetts Univ. Washington D. C. Calif. Dept. of Industria

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