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IEEE Topical Meeting on Electrical Performance of Electronic Packaging (EPEPS)

作者： A. Kamo T. Watanabe H. Asai Department of Systems Enginering Faculty of Engineering Shizuoka University Hamamatsu Japan School of Administration and Informatics University of Shizuoka Shizuoka Japan

This paper investigates the optimal placement of decoupling capacitors on printed circuit boards (PCB). This method minimizes the impedance characteristics at the power supply in the specified frequency range in order to find the optimal decoupling capacitor position. In this method, the PCB is modeled via the partial element equivalent circuit (PEEC) model approach to handle the 3D structures, and the Krylov-subspace technique is used to obtain the impedance characteristics in the frequency domain efficiently.

关键词： Optimization methods Capacitors Printed circuits Impedance Power supplies Frequency Coupling circuits Capacitance Circuit simulation Finite difference methods

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An application of Verilog-A to modeling of back propagation algorithm in neural networks

An application of Verilog-A to modeling of back propagation ...

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Midwest Symposium on Circuits and systems (MWSCAS)

作者： K. Suzuki A. Nishio A. Kamo T. Watanabe H. Asai Department of Systems Engineering Faculty of Eng. Shizuoka University Hamamatsu Japan School of Administration and informatics University of Shizuoka Hamamatsu Japan

This paper describes an application of the Verilog-A, which is a hardware description language for analog applications, to the modeling of neural networks. We attempt to simulate neural networks having a learning algorithm, which has not been designed with electronic circuits. The learning algorithm is modeled with Verilog-A and the suitable synaptic weights are solved by Verilog-A simulation.

关键词： Hardware design languages Intelligent networks Neural networks Circuit simulation Modeling Electronic circuits Very large scale integration Digital systems Circuit synthesis Neurons

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Time-varying Stabilization of Hamiltonian systems Via Generalized Canonical Transformations

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IFAC Proceedings Volumes 2000年第2期33卷 63-68页

作者： Kenji Fujimoto Toshiharu Sugie Faculty of Information Technology and Systems Department of Electrical Engineering Delft University of Technology P.O.Box 5031 2600 GA Delft The Netherlands Department of Systems Science Graduate School of Informatics Kyoto University Uji Kyoto 611-0011 Japan

This paper focuses on the stabilization of port-controlled Hamiltonian systems employing possibly time-varying controllers. At first we refer to the generalized canonical transformation which preserves the structure of Hamiltonian systems and the passivity property that physical systems innately possess. Next we show a general stabilization strategy for port-controlled Hamiltonian systems based on it which is a natural generalization of well-known passivity based control. Finally we utilize this method to mechanical Hamiltonian systems with nonholonomic constraints by modifying the kinetic energy of the system. Furthermore some examples are given to show how this technique works for physical systems.

关键词： Physical models nonlinear systems time-varying systems transformations passive

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A generalized OGY method for controlling higher order chaotic systems

A generalized OGY method for controlling higher order chaoti...

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IEEE Conference on Decision and Control

作者： Xinghuo Yu Guanrong Chen Yanxing Song Zhenwei Cao Yang Xia Faculty of Informatics and Communication Central Queensland University Rockhampton QLD Australia Department of Electrical and Computer Engineering University of Houston Houston TX USA Faculty of Engineering and Physical Systems Central Queensland University Rockhampton Australia Department of Electrical Engineering Yangzhou University Yangzhou Jiangsu China

In this paper, we discuss a generalization of the OGY chaos control method based on the invariant manifold theory. This control methodology can deal with higher order chaotic systems in the same spirit of the OGY meth... 详细信息

ISBN: (纸本)0780366387

关键词： Control systems Chaos Chaotic communication Eigenvalues and eigenfunctions Communication system control informatics Vehicle dynamics Australia systems engineering and theory Centralized control

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Slow TE/sub 0n/ modes in a circular ferrite waveguide

Slow TE/sub 0n/ modes in a circular ferrite waveguide

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Trans Black Sea Region Symposium on Applied Electromagnetism

作者： G.N. Georgiev N.K. Uzunoglu M.N. Georgieva-Grosse Faculty of Mathematics and Informatics University of Veliko Tarnovo Tirnovo Bulgaria Institute of Communication and Computer Systems Department of Electrical and Computer Engineering National and Technical University of Athens Athens Greece Gerlingen Germany

Summary form only given. This investigation aims at enlightening some properties of the slow TE/sub 0n/ modes, supported by an azimuthally magnetized circular ferrite waveguide. Unlike the case of normal propagation, a few studies only treat these circular structures with ferrite or solid-plasma which cannot be sustained by isotropic waveguides. The properties of the guide permit one to control the wave propagation by changing the frequency and makes the structure appropriate for a current controlled switch or isolator.

关键词： Tellurium Ferrites Microwave propagation Magnetization Frequency Permittivity Polynomials Switches Antennas and propagation Magnetic properties

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Hamiltonian Realizations of Nonlinear Adjoint Operators

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IFAC Proceedings Volumes 2000年第2期33卷 39-44页

作者： Kenji Fujimoto Jacquelien M.A. Scherpen W. Steven Gray Faculty of Information Technology and Systems Department of Electrical Engineering Delft University of Technology P. O. Box 5031 2600 GA Delft The Netherlands Department of Systems Science Graduate School of Informatics Kyoto University Uji Kyoto 611-0011 Japan Department of Electrical and Computer Engineering Old Dominion University Norfolk Virginia 23529-0246 U.S.A.

This paper addresses state-space realizations for nonlinear adjoint operators. In particular the relationship among nonlinear Hilbert adjoint operators, Hamiltonian extensions and port-controlled Hamiltonian systems are clarified. The characterization of controllability, observability and Hankel operators, and controllability and observability functions will be derived based on it. Furthermore a duality between the controllability and observability functions will be proven. The statespace realizations ofsuch operators provide new insights to nonlinear control systems theory.

关键词： Nonlinear control systems adjoint operators Hamiltonian control systems Hamiltonian extensions Legendre transformations

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A Reinforcement Learning Scheme of Fuzzy Rules with Reduced Conditions

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Journal of Advanced Computational Intelligence and Intelligent informatics 2000年第2期4卷 146-151页

作者： Kawakami, Hiroshi Katai, Osamu Konishi, Tadataka Departent of Systems Science Graduate School of Informatics Kyoto University Yoshida-Honmachi Kyoto606-8501 Japan Department of Information Technology Faculty of Engineering Okayama University 3-1-1 Tsushima-Naka Okayama700-8530 Japan

This paper proposes a new method of Q-leaming for the case where the states (conditions) and actions of systems are assumed to be continuous. The components of Q-tables are interpolated by fuzzy inference. The initial set of fuzzy rules is made of all combinations of conditions and actions relevant to the problem. Each rule is then associated with a value by which the Q-values of condition/action pairs are estimated. The values are revised by the Q-leaming algorithm so as to make the fuzzy rule system effective. Although this framework may require a huge number of the initial fuzzy rules, we will show that considerable reduction of the number can be done by adopting what we call Condition Reduced Fuzzy Rules (CRFR). The antecedent part of CRFR consists of all actions and the selected conditions, and its consequent is set to be its Q-value. Finally, experimental results show that controllers with CRFRs perform equally well to the system with the most detailed fuzzy control rules, while the total number of parameters that have to be revised through the whole learning process is considerably reduced, and the number of the revised parameters at each step of learning increased. © Fuji Technology Press Ltd. Creative Commons CC BY-ND: This is an Open Access article distributed under the terms of the Creative Commons Attribution-NoDerivatives 4.0 International License (http://***/licenses/by-nd/4.0/).

关键词： Reinforcement learning

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A quantum theoretical approach to information processing in neural networks

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AIP Conference Proceedings 2000年第1期517卷 330-344页

作者： José Barahona da Fonseca Isabel Barahona da Fonseca Carmen Paz Suarez Araujo José Simões da Fonseca 1Faculty of Sciences and Technology New University of Lisbon Department of Electrical Engineering Quinta da Torre 2825 Monte da Caparica Portugal 2Faculty of Psychology of University of Lisbon Alameda da Universidade 1600 Lisboa Portugal 3Faculty of Computer Sciences Department of Informatics and Systems University of Las Palmas de Gran Canaria Las Palmas de Gran Canaria Spain 4Faculty of Medicine University of Lisbon Department of Medical Psychology and Psychopathology Av. Prof. Egas Moniz 1600 Lisboa

A reinterpretation of experimental data on learning was used to formulate a law on data acquisition similar to the Hamiltonian of a mechanical system. A matrix of costs in decision making specifies values attributable to a barrier that opposed to hypothesis formation about decision making. The interpretation of the encoding costs as frequencies of oscillatory phenomena leads to a quantum paradigm based in the models of photoelectric effect as well as of a particle against a potential barrier. Cognitive processes are envisaged as complex phenomena represented by structures linked by valence bounds. This metaphor is used to find some prerequisites to certain types of conscious experience as well as to find an explanation for some pathological distortions of cognitive operations as they are represented in the context of the isolobal model. Those quantum phenomena are understood as representing an analogue programming for specific special purpose computations. The formation of complex chemical structures within the context of isolobal theory is understood as an analog quantum paradigm for complex cognitive computations.

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Experimental verification of the entropy based method for minimization of switching functions on pseudo ternary decision trees

Experimental verification of the entropy based method for mi...

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4th International Conference on Telecommunications in Modern Satellite, Cable and Broadcasting Services, ITELSIKS 1999

作者： Yanushkevich, S.N. Shmerko, V.P. Stanković, R.S. Dziurzanski, P. Popel, D.V. Department of Coniputer Aided Design Systems Faculty of Computer Science and Infortnation Systems Technical University of Szczecin Poland Department of Computer Science Faculty of Electronic Engineering University of Nis Serbia Department of Computer Science State University of Informatics and Radioelectronics Minsk Belarus

ISBN: (纸本)078035768X

We present a new entropy based method for minimization of sum-of-product (SOP) expressions of switching functions. Unlike the recent results which utilize binary decision trees (DTs), we study the minimization procedure as a heuristic search based on information measures on the free pseudo ternary DTs. The main contribution of this paper is an experimental justification of the entropy based method that yields the extreme improvements compared to some recent results on application of information theory methods for SOP minimization of switching functions. In most cases, we obtained that the quality of minimization with our minimizer InfoMin-2 is the same as that produced by ESPRESSO package, but is often performed faster. © 1999 IEEE.

关键词： Entropy

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Information theoretical approach to minimization of AND/EXOR expressions of switching functions

Information theoretical approach to minimization of AND/EXOR...

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4th International Conference on Telecommunications in Modern Satellite, Cable and Broadcasting Services, ITELSIKS 1999

作者： Shmerko, V. Popel, D. Stanković, R.S. Cheushev, V. Yanushkevich, S. Department of Computer Aided Design Systems Techinal University of Szczecin Poland Department of Computer Sicience State University of Informatics and Radioelectronics Minks Belarus Department of Computer Science Faculty of Electronic Engineering University of Nis Serbia Department of Programming Technologies State University Minsk Belarus

ISBN: (纸本)078035768X

In modern circuit design, the Shannon decomposition of switching functions is widely used. On the other hand, in information theory of telecommunication, the Shannon entropy used as a measure to represent the information in numerical values, is a key notion. In this paper, we relate these two concepts, belonging to different areas, into an approach to the minimisation of exclusive-or sum-of-products (AND/EXOR) expressions for switching functions. The Shannon decomposition, and the closely related Davio decomposition for AND/EXOR expressions are interpreted in terms of basic concepts in the information theory. Thanks to that, we have proposed an entropy based strategy for minimization of AND/EXOR expressions. We have provided a comparison and an experimental verification of this strategy with some known heuristic minimization strategies using benchmarks. In some cases, our program Info-EXOR produces extremely better results. Moreover, the information theory interpretation of classical decomposition of switching functions offers a new point of view to the existing design styles. © 1999 IEEE.

关键词： Information theory

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