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IEEE International Conference on Image Processing

作者： G. Lambert F. Bock Control System Theory & Robotics Sect Institute of Control Engineering Darmstadt University of Technology Darmstadt Germany Institute of Network-and Signa Theory Darmstadt University of Technology Darmstadt Germany

In this article we introduce our approach to exploit multiscale wavelet methods for texture defect detection. Several wavelet bases and decomposition algorithms are examined in regard of applicability, parameterization and computational costs. The article points out specific problems in localizing texture defects in multiscale wavelet representations. Besides the fast dyadic wavelet transform we demonstrate the application of the translation invariant a trous algorithm on texture samples. Feature extraction methods are proposed and examples of successful defect classification results are shown.

关键词： Wavelet analysis Wavelet transforms Wavelet packets Image texture analysis Signal resolution Signal analysis Continuous wavelet transforms Image reconstruction Signal processing Filters

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An Interactive Computer Package for Enhancing the Teaching and Learning of Adaptive control engineering Techniques

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IFAC Proceedings Volumes 1997年第12期30卷 139-143页

作者： K.J. Burnham A. Dunoyer L. Koszalka I. Pozniak Control Theory & Applications Centre Coventry University CV1 5FB UK Institute of Control & Systems Engineering Technical University of Wroclaw Poland

The paper reports on the on-going development of an interactive computer package for assisrmg in the introduction and in the reinforcement of concepts of discrete time adaptive/self-tuning control to undergraduates in the area of electronics, computer systems and control engineering. The project is being carried out jointly by staff of the control theory and Applications Centre, Coventry University, UK, and the institute of control and Systems engineering, Technical University of Wroclaw, Poland.

关键词： Adaptive control control algorithms estimation algorithms simulation teaching

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Solutions to a class of nonstandard nonlinear H/sub /spl infin// control problems

Solutions to a class of nonstandard nonlinear H/sub /spl inf...

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IEEE Conference on Decision and control

作者： L. Baramov Department of Mathematical Engineering and Information Physics University of Tokyo Bunkyo Tokyo Japan Department of Control Engineering Institute of Information Theory and Automation of the Academy of Sciences Czech Technical University Czech Republic

We present a new solution to H/sub /spl infin// control problems for nonlinear plants whose measurement output is of dimension larger than the dimension of the external input. This problem is, under proper assumptions, transformed to stabilizing by means of output injection, and solving a Hamilton-Jacobi inequality arising in the H/sub /spl infin// state-feedback control. General sufficient solvability conditions are given. Explicit solutions are available in the local case. The issue of the controller order is addressed and a reduced order controller is obtained.

关键词： Output feedback Nonlinear control systems control systems Hydrogen State feedback Automatic control Information theory Automation Linear feedback control systems Feedback control

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Improved LMS adaptive algorithm with varying stepsize

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Chinese Science Bulletin 1996年第18期41卷 1568-1571页

作者：朱贤阳李敬任朗汪文秉 Institute of Electromagnetic Theory & Microwave Technology Southwest Jiaotong UniversityChengdu 610031 China Department of Information & Control Engineering Xi'an Jiaotong University Xi'an 710049 China

In the field of system identification, the coefficients of a digital filter, which are used to illustrate the transfer function of a system, are often fixed by known input and output signal sequences. The least mean square (LMS) adaptive algorithm is often used for its small computational requirement and convergence ***, the input or the output signal sequence often contains directive current (DC) components. What is the effect of the DC component upon the adaptive algorithm? This is just the main objective of this note. Here we propose an improved LMS adaptive algorithm with varying stepsize, which is based on the DC components analyzing.

关键词： LMS adaptive algorithm system identification directive currents.

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Generation of structured process models using genetic programming 3rd

Generation of structured process models using genetic progra...

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3rd Workshop on Artificial Intelligence and Simulation of Behaviour, AISB 1996

作者： Pohlheim, Hartmut Marenbaeh, Peter Daimler Benz AG Systems Technology Research Alt-Moabit 96a BerlinD-10559 Germany Darmstadt University of Technology Institute of Control Engineering Department of Systems Theory and Robotics Landgraf-Georg-Strare 4 DarmstadtD-64283 Germany

ISBN: (纸本)3540617493

The design of structured mathematical models of processes in a certain level of abstraction defined by the given task appears to be difficult and time consuming even for experienced experts. This paper reports on a new method for the design of structured process models based on the metaphor of Genetic Programming. This new methodology allows the automatic generation of non-linear process models in a self-organizing way. © Springer-Verlag Berlin Heidelberg 1996.

关键词： Genetic algorithms

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Methods for a Transparent Development and Optimization of Biotechnological Processes

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IFAC Proceedings Volumes 1996年第1期29卷 6768-6773页

作者： Peter Marenbach Kurt Dirk Bettenhausen Henning Tolle Darmstadt University of Technology Institute of Control Engineering Department of Control Systems Theory & Robotics Landgraf-Georg-Strasse 4 D-64283 Darmstadt Germany URL: http //www.rt.e-technik.th-darmstadt.de

The article at hand describes an integrating system for the intelligent control of complex bio technological processes including automatic modelling and model based control strategy generation. Starting with a summary of previously achieved results, some new approaches that provide better transparency to process engineers and operators are discussed. This includes aspects of self-organizing generation of structured dynamic nonlinear process models based upon the ideas of genetic programming as well as the transparent generation of fuzzy rules in a particular NeuroFuzzy approach. The latter is used for the classification of physiological states during batch and fed-batch fermentations and for the long time strategy generation to optimize the achievable product yield.

关键词： Biotechnology Process control Fuzzy systems Learning control Genetic algorithms

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control system design for an ideal transient control performance - Proposal of simulator-based foresight control

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ELECTRICAL engineering IN JAPAN 1996年第5期116卷 107-117页

作者： Uchida, M Nakano, K Fukuoka Institute of Technology Fukuoka Japan 811-02 [?]Graduated from Kyushu University in 1958 and received his Dr. of Eng. degree from there. He joined Kyushu Electric Power Co. Inc. and there he engaged in the planning construction operation and maintenance of thermal power plants as the technical staffer section chief assistant manager and superintendent. Since 1994 he has been a Professor in the Department of Electrical Engineering Fukuoka Institute of Technology Japan. His main interest is in the application of modern control theory to actual plants. For his contribution to this field he was awarded the Okochi Memorial Technical Prize and SICE Technical Prize in 1980. He is a member of the Society of Institute of Instrument and Control Engineers of Japan (SICE).

A new concept to achieve an ideal transient control performance is described. It is also possible to examine control performance on the frequency domain. Generally speaking, better control performance will be realized by using more exact information on the plant. A simulator should be built that has both correct initial values of state variables and parameters on dominant parts of the plant. The internal states of the simulator are used to represent the internal states of the plant, and control input is synthesized with the internal states of the simulator and the plant output. Using information on the simulator allows an ideal control performance at a dominant frequency area to be obtained in spite of the existence of unmodeled dynamics at a higher frequency domain. This control system is called simulator-based foresight control (SFC), and is available for both nonlinear and time-varying plants.

关键词： small controller large-scale plant simulator-based foresight control nonlinear systems

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Mathematical foundations of the instantaneous power concepts: A geometrical approach - Mathematical foundations of the instantaneous power concepts: An algebraic approach - Reply

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EUROPEAN TRANSACTIONS ON ELECTRICAL POWER 1996年第5期6卷 314-314页

作者： Willems, JL Cristaldi, L Ferrero, A [?]From the Massachusetts Institute of Technology Cambridge and the Ph. D. degree in applied science from the University of Gent in 1963 1964 and 1967 respectively. In 1964 he joined the Engineering Faculty of the University of Gent where he is presently Professor of Electrical Engineering. In 1970 he was on leave at the Division of Engineering and Applied Physics of Harvard University Cambridge Mass./USA. In 1982 he was a Visiting Professor at the Universiti Nationale du Rwanda (Central Africa). His teaching and research interests include power system analysis and control system stability theory. From 1988 to 1992 he was Dean of the Engineering Faculty of the University of Gent. Since October 1993 he has been Rectorofthe University. (University of Gent Technologiepark-Zwijnaarde 9 B-9052 Gent (Zwijnaarde)/ Belgium T + 329/2645653 Fax + ***)

In this paper a mathematical formalism, based on a geometrical approach, is proposed for defining the concepts of instantaneous active and instantaneous reactive power. Use is made of the dot product and the cross product for three-dimensional vectors. The relationship with the analysis proposed by Akagi et al. and by Ferrero and co-authors is discussed in detail. In particular it is shown that the proposed formalism is well suited to deal with three-phase currents and voltages with zero-sequence components.

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An example for dynamic compensation of non-active power in the case of non-linear active loads

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EUROPEAN TRANSACTIONS ON ELECTRICAL POWER 1996年第5期6卷 345-350页

作者： Staudt, V [?]Dr.-Ing. Volker Staudt (1962). VDE IEEE studied electrical engineering at the Ruhr-University Bochum Germany receiving his Dipl.-lng. degree in 1987 and his Dr.-Ing. degree in 1993. Since 1988 he is with the Institute for Generation and Application of Electrical Energy at the Ruhr-University Bochum. His main fields of research are: power definitions compensation strategies description and analysis of measured quantities theory and control of asynchronous machines. (Ruhr-Universitiit Bochum Lehrstuhl fur Erzeugung und Anwendung elektrischer Energie D-44780 Bochud Germany T +49234/700-3962 Fax +49234/7094-201 e-mail: staudt@eaee.ruhr-uni-bochum.de)

A lot of different definitions for active and non-active quantities and their compensation are known in case of single- or polyphase systems under steady-state conditions. In practice the load as well as the source of such a system is varying with time. This requires compensation methods which are ready to deal with dynamic conditions. In the most general case the load may be non-linear and even change from passive to active and vice versa;This paper presents a control scheme for a series compensator (series active filter) in a single-phase circuit which can handle a wide range of passive and active non-linear loads under dynamic conditions. No information about the character of the source and the load is required as long as load and source current can be controlled by appropriate voltages.

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A new algorithm for transient analysis of electromagnetic wave systems

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ELECTRONICS AND COMMUNICATIONS IN JAPAN PART II-ELECTRONICS 1996年第5期79卷 48-57页

作者： Kuroiwa, T Hosono, T Department of Electrical Engineering College of Science and Technology Nihon University Japan Received his B.E. and M.E. degrees from the Department of Precision Mechanical Engineering Nihon University in 1987 and 1989 respectively. He received his Ph.D. degree in Electrical Engineering from Nihon University in 1995. In 1995 he became a Lecturer in the Department of Electrical Engineering. He has been engaged in research on control theory network theory and electromagnetic theory. Received his B.E. degree in 1946 from the Department of Electrical Engineering Nihon University. He was a special postgraduate student at Tokyo University where he received his Ph.D. degree in 1958. In 1960 he became a Professor at Nihon University. Since 1994 he has been Professor Emeritus. He was a Visiting Scholar at the University of Illinois and a Visiting Professor at Kuwait University. He was Chairman of Group on Electromagnetic Theory of the Institute of Electrical Engineers of Japan and Editorial Advisor of I.E.I.C.E. He is the author ofFundamentals of Information Engineering Fundamentals of linear Black Boxes Science of Entropy(Corona Publ.) Fundamentals of Electromagnetic Waves(Shokodo Publ.) andFast Inversion of Laplace Transform by BASIC(Kyoritsu Publ.). He is coauthor ofModern Analysis of Electromagnetic Fields(I.E.I.C.E.).

In the analysis of a general linear system including the electromagnetic wave transmission systems, it is often necessary to derive system functions such as the immittance function and the transfer function from the frequency characteristics. In solving these problems, it is possible to use the Herglotz-Cauer theorem for the immittance function and Hosono's theorem for the transfer function. In these theorems, it is necessary to calculate integrals on the frequency when the system function is derived. There are a limited number of cases that can be solved analytically. However, when Hosono's theorem is combined with the fast inversion of Laplace transform (FILT), it is predicted that such a combination is a powerful tool for analyzing the transient phenomena of the electromagnetic wave propagating in plasma, wave-guides, and optical fibers. To confirm such a prediction, the transient phenomena of the electromagnetic wave propagating in a plasma were analyzed as an example so that the effectiveness was supported.

关键词： Herglotz-Cauer theorem Hosono's theorem FILT electromagnetic wave transient phenomena

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