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7th International Conference on computer Analysis of Images and Patterns, CAIP 1997

作者： Gasteratos, A. Andreadis, I. Tsalides, Ph Laboratory of Electronics Section of Electronics and Information Systems Technology Department of Electrical and Computer Engineering Democritus University of Thrace Xanthi671 00 Greece

ISBN: (纸本)3540634606

A new hardware structure for implementation of soft morphological filters is presented in this paper. This is based on the modification of the majority gate technique. A pipelined systolic array architecture suitable to perform real-time soft morphological filtering is presented as an illustrative example. The processing times of the proposed hardware structure do not depend on the data window size and its hardware complexity grows linearly with the number of its inputs. © Springer-Verlag Berlin Heidelberg 1997.

关键词： Bandpass filters

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Systematic development of industrial control systems using software/hardware engineering

Systematic development of industrial control systems using s...

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EUROMICRO Conference

作者： J.P.M. Voeten P.H.A. van der Putten M.P.J. Stevens Section of Information and Communication Systems Faculty of Electrical Engineering Eindhovan University of Technology Eindhoven Netherlands

SHE (software/hardware engineering) is a new object-oriented analysis, specification and design method for complex reactive hardware/software systems. SHE is based on the formal specification language POOSL and a design framework for guiding analysis and design activities. This paper reports on the applicability of the SHE method for the specification and design of the control subsystem of a new generation of industrial mailing machines.

关键词： Industrial control Software systems Hardware Design automation Electrical equipment industry Machinery production industries information technology Control systems Design engineering Design methodology

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A Robust Non-Linear Control Design for a Turbogenerator

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IFAC Proceedings Volumes 1997年第21期30卷 275-280页

作者： V. Vesely J. Simovec D.P. Papadopoulos Department of Automatic Control Systems Faculty of Electrical Engineering and Information Technology Slovak University of Technology Bratislava. Department of Electrical Computer Engineering Democritos University of Thrace 67100 Xanthi Greece

In this paper is presented a new approach to robust non-linear control design, which can guarantee a prescribed decay rate of exponential stability for known system uncertainties. The proposed approach doesn’t employ matching conditions. The non-linear power system with deterministic uncertainties is chosen as demonstration example.

关键词： robust non-linear exponential stability semi-linear power system

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A test processor chip implementing multiple seed, multiple polynomial linear feedback shift register

A test processor chip implementing multiple seed, multiple p...

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Asian Test Symposium (ATS)

作者： Z.M. Darus I. Ahmed L. Ali Department of Electrical Electronic and Systems Engineering Universiti Kebangsaan Malaysia Malaysia Faculty of Computer Science and Information Technology University of Malaya Malaysia

This paper presents the design of a low cost, test processor ASIC chip implementing multiple seed, multiple polynomial linear feedback shift register (MPMSLFSR). User programmable seed and feedback connection can be set in the pattern generator of the chip to improve fault coverage. The ASIC also supports scan-path testing. It can also be used to design external IC tester.

关键词： Polynomials Feedback Circuit testing Nonlinear equations Application specific integrated circuits Test pattern generators Circuit faults Costs System testing Integrated circuit testing

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Relating H/sub 2/ and H/sub /spl infin//-norm bounds for sampled-data systems

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IEEE Transactions on Automatic Control 1997年第6期42卷 858-863页

作者： S. Hara B.D.O. Anderson H. Fujioka Department of Systems Engineering and Cooperative Research Center for Robust and Adaptive Systems School of Information Sciences & Engineering Australian National University Canberra Australia Department of Computational Intelligence and Systems Science Tokyo Institute of Technology Yokohama Japan Department of Mechanical Engineering for Computer Controlled Machinery Faculty of Engineering Osaka University Suita Osaka Japan

We relate the H/sub /spl infin// and H/sub 2/ norms for multi-input/multi-output sampled-data feedback control systems, where a continuous-time plant is controlled by a digital compensator with hold and sampler. Upper bounds on both H/sub 2/ and H/sub /spl infin// norms are obtained based on fundamental relations derived by two different approaches, namely the hybrid state-space approach and the fast sampling and lifting approach.

关键词： H infinity control Riccati equations Automatic control Robustness Output feedback Control system synthesis Optimal control Entropy Attenuation Control systems

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A fast minimum cost flow algorithm for VLSI layout compaction

A fast minimum cost flow algorithm for VLSI layout compactio...

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IEEE International Symposium on Circuits and systems (ISCAS)

作者： I. Arungsrisangchai Y. Shigehiro I. Shirakawa H. Takahashi Department of Electronic Engineering King Mongkut's Institute of Technology Bangkok Thailand Department of Information Systems Engineering Faculty of Engineering Osaka University Suita Japan Department of Communication Engineering Faculty of Computer Science and System Engincering Okayama Prefectural University Japan

Since the layout compaction problem is dual to the minimum cost flow problem, flow algorithms can be applicable to the layout compaction. In this paper, an existing flow algorithm is investigated in terms of the layout compaction, and a fast flow algorithm is devised on the basis of the primal-dual method. Experimental results show that the proposed algorithm is the fastest dedicatedly for the compaction problem.

关键词： Costs Very large scale integration Compaction Constraint optimization information systems systems engineering and theory computer science Productivity Linear programming Constraint theory

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Subspace Model Identification for Continuous-Time systems

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IFAC Proceedings Volumes 1997年第11期30卷 1567-1572页

作者： Zi-Jiang Yang Setsuo Sagara Kiyoshi Wada Faculty of Computer Engineering and System Science Kyushu Institute of Technology Iizuka Fukuoka 820 Japan TEL +81-948-29-7672 FAX +81-948-29-7651 Department of Communication Computer Engineering Fukuoka Institute of Technology Wajirohigashi Higashiku Fukuoka 811-02 Japan Department of Electrical and Electronic Systems Engineering Graduate School of Information Science and Electrical Engineering Kyushu University Hakozaki Fukuoka 812 Japan

Usually, the subspace-based state-space system identification algorithms are focused on discrete-time models, which may cause some numerical problems when the sampling interval is small. This paper proposes an algorithm of subspace-based state-space system identification for continuous-time systems from sampled input-output data. The ω — operator ω = ( p - α)/( p + α) where p denotes a differential operator and α > 0, is introduced to avoid direct numerical differentiations. And the ω — operator state-space model identified by the 4SID method can be transformed back to the common continuous-time state-space model. The numerical superiority of the ω — operator approach compared to some other methods is verified through simulation study.

关键词： Subspace model identification continuous-time system ω—operator sampled data

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Design decision support system for the engineering/re-engineering of complex naval systems

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NAVAL ENGINEERS JOURNAL 1997年第4期109卷 23-33页

作者： Graham, JH Ragade, RK Shea, J James H. Graham:is the Henry Vogt Professor of computer science and engineering at the University of Louisville. Previous professional employment includes positions at Rensselaer Polytechnic Institute and General Motors Corporation. He received his master's and doctoral degrees at Purdue University and his bachelor's degree at Rose-Hulman Institute of Ethnology. His research interests include artificial intelligence robotics and paraliel computing. Rammohan K. Ragade:is professor of engineering mathematics and computer science at the University of Louisville. He received his Ph.D. from the Indian Institute of Technology at Kampur in 1968. He has been a faculty member at the University of Waterloo and held an engineering position with Bell Northern Research. His research interests include human-computer interaction decision support systems object-oriented simulation and modeling distributed database systems and fuzzy logic. John G. Shea Jr.:served until 1995 as a project manager in the Phalanx Engineering Section of Naval Surface Warfare Center Crane Division Louisville Station. He received his bachelor's and master's degrees from the Speed Scientific School at the University of Louisville. He was a member of the American Society of Naval Engineers.

Hybrid simulation includes both functional computer software models and actual hardware subsystems operating as an integrated whole. A ''hot test bed'' or a ''hybrid simulator-emulator'' enables design engineers to evaluate conceptual models in a more realistic real-lime context, but places increased cognitive demands on the designer. This paper describes an architecture, and results from a prototype implementation, for a design decision support system to allow a designer to make more productive and cost effective use of a test bed system.

关键词： Decision support systems

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Developing a prototype concurrent design tool for composite topside structures

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NAVAL ENGINEERS JOURNAL 1997年第3期109卷 279-290页

作者： Dirlik, S Hambric, S Azarm, S Marquardt, M Hellman, A Bartlett, S Castelli, V Steve Dirlik:began his career at the Naval Surface Warfare Center Carderock Division in 1981 as an aerospace engineer co-op student. He completed his bachelor of science degree in aeropace and ocean engineering from Virginia Polytechnic Institute and State University in 1985 and his master of science degree in aerospace engineering from the University of Maryland in 1990. Mr. Dirlik recently completed a master of science program in applied physics at The Johns Hopins University and currently works in the Radar Cross Section and Target Physics Branch of the Signatures Directorate at the Naval Surface Warfare Center Corderoke Division. He has worked on Navy low observable programs since 1990. Stephen Hambric:is a research associate at the Applied Research Laboratory at The Pennsylvania State University. He received his B. S. and M.S. degree in mechanical engineering from Virginia Polytechnic Institute and State University and his D. Sc. in mechnical engineering from the George Washington University. He has worked on several computer aided multidiscikplinary design and optimization projects over the years including an automated propeller design system and a structural acoustic optimization capability. Dr. Shpour Azarm:is currently working as an associate professor with the Design and Manufacturing Group of the Department of Mechanical Engineering at the University of maryland at College Park. Dr Azarm's expertise is in the areas of optimization-based designed and concurrent design and optimization of multidisciplinary systems. He was a consultant at Black & Decker Corporation (summer 1996) and worked as a Navy senior summer faculty fellow (summer 1995) and a NASA summer faculty fellow (summer 1994). He was a visiting scientist at NASA Langley Research Center for Multidisciplinary Analysis and Applied Structural Optimzatiom at the University of Siegen in Germany (spring 1992) and the Design Institute of the Technical University of Denmark (summer 1990). Dr Azarm was an associate technical editor of the ASME Jour

A prototype concurrent engineering tool has been developed for the preliminary design of composite topside structures for modern navy warships. This tool, named GELS for the Concurrent engineering of Layered Structures, provides designers with an immediate assessment of the impacts of their decisions on several disciplines which are important to the performance of a modern naval topside structure, including electromagnetic interference effects (EMI), radar cross section (RCS), structural integrity, cost, and weight. Preliminary analysis modules in each of these disciplines are integrated to operate from a common set of design variables and a common materials database. Performance in each discipline and an overall fitness function for the concept are then evaluated. A graphical user interface (GUI) is used to define requirements and to display the results from the technical analysis modules. Optimization techniques, including feasible sequential quadratic programming (FSQP) and exhaustive search are used to modify the design variables to satisfy all requirements simultaneously. The development of this tool, the technical modules, and their integration are discussed noting the decisions and compromises required to develop and integrate the modules into a prototype conceptual design tool.

关键词： Warships

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An ASIC for fast grey-scale dilation

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MICROPROCESSORS AND MICROsystems 1996年第2期20卷 89-95页

作者： Andreadis, I Gasteratos, A Tsalides, P Laboratory of Electronics Section of Electronics and Information Systems Technology Department of Electrical and Computer Engineering Democritus University of Thrace Xanthi 67100 Greece

The design and VLSI implementation of a new ASIC which performs the operation of grey-scale dilation using both image and structuring element threshold decomposition is presented in this paper. The minimum rate of external operations of this ASIC is 30 MPix/sec and it can handle 3 x 3 pixel images and structuring elements of up to 4-bit resolution. The high speed of operation is achieved using the pipelining technique. The ASIC is implemented using a DLM, 1.0 mu m, N-well, CMOS process provided by the European Silicon Structures (ES2), and it occupies a silicon area of 5.48 x 5.77 mm = 31.61 mm(2). It is intended to be used in machine vision applications, where the need for short processing times is crucial (e.g. robotics and military systems).

关键词： mathematical morphology VLSI ASIC

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