检索结果-内蒙古大学图书馆

International Symposium on autonomous Decentralized Systems (ISADAS)

作者： S. Ito H. Yuasa K. Ito M. Ito Bio-Mimetic Control Research Center Institute for Physical and Chemical Research Nagoya Japan School of Engineering University of Nagoya Nagoya Japan Department of Information and Computer Science Toyohashi University of Technology Japan School of Engineering Chubu University Japan

Visual information processing in biological systems is performed simultaneously and in parallel at each neural unit. That is, a global task with no supervisor is achieved by the interaction among many subsystems. In this sense, the visual process shares the common functional structure with 'autonomous decentralized systems' which have attracted much attention in the field of system engineering. We attempt to design a pictorial pattern recognition system based on the concept of the autonomous decentralized system. The local interaction among subsystems is described by reaction-diffusion equations, in which each subsystem utilizes only the neighboring information around itself.< >

关键词： Pattern recognition Associative memory Information processing Biological systems Systems engineering and theory Equations

来源：评论

学校读者我要写书评

暂无评论

FAULT-TOLERANT ASSOCIATE MEMORIES

引用

SYSTEMS AND computerS IN JAPAN 1995年第7期26卷 1-12页

作者： FUJIWARA, E TANAKA, T Member Faculty of Engineering Tokyo Institute of Technology Tokyo Japan 152 Eui Fujiwara:received his B.S. and M.S. degrees in Electronics Engineering in 1968 and 1970 respectively and his Dr. of Eng. degree in 1981 all from Tokyo Institute of Technology. In 1970 he joined the NTT Musashino Electrical Communication Laboratories and engaged in developing PIPS-1 and PIPS-11 computer systems. In 1988 he joined the Department of Computer Science Tokyo Institute of Technology as an Associate Professor. In 1990 he became a full Professor. He was a Visiting Professor at the Center for Advanced Computer Studies the University of Southwestern Louisiana from June 1985 to July 1986. His current research interests include coding theory for computers fault-tolerant memories VLSI defect-toleranceand WSI systems. He is a co-author ofError Control Coding for Computer Systems(Prentice-Hall1989) EssentiaLF of Error-Correcting Coding Techniques (Academic Press 1990) and other books. Dr. Fujiwara received the Young Engineer Award from the I.E.I.C.E. in 1978 and the Teshima Memorial Research Award in 1991. He is a senior member of the IEEE and a member of the Information Processing Society Japan. Associate Member

Because of its capability of high-speed search, the associative memory (CAM) is expected to be used in a variety of information processing systems. In this paper, novel fault-tolerant techniques which are effective for on-line use are proposed for TLB which is an example of the application of CAM. First, fault and error models of the TLB consisting of the CAM part and the SRAM part are clarified. Then, the fault-tolerant techniques for these faults and errors, such as distance separable technique, cod-ing technique, simplified 1-out-of-n check and graceful degradation, are proposed. The distance separable technique which encodes the data stored in the CAM part is the one which masks the faulty CAM part and prevents errors from propagating to the subsequent circuits. The coding technique checks the one-to-one correspondence between the data in the CAM and those in SRAM by using the SEC-DED code with byte error detection capability, i.e., SEC-DED-SbED code, and at the same time it detects and corrects errors in the data stored in SRAM. The simplified 1-out-of-n check processes association errors. The graceful degradation gives a flag in the faulty memory section and prevents it from being used. The methods proposed in this paper are evaluated from area augmentation and error detection capability perspectives. The results show that the fault-tolerant TLB with 32 virtual address bits, 32 physical address bits and 128 entries gives single fault detection probability of nearly 99 percent with 28 percent area increase.

关键词： CAM TLB DISTANCE SEPARABLE TECHNIQUE CODING TECHNIQUE SIMPLIFIED 1-OUT-OF-N CHECK GRACEFUL DEGRADATION

来源：评论

学校读者我要写书评

暂无评论

OPTIMUM FREQUENCY REUSE IN MOBILE TELEPHONY SYSTEMS

引用

INTERNATIONAL JOURNAL OF COMMUNICATION SYSTEMS 1995年第3期8卷 185-190页

作者： KAZANTZAKIS, MG DEMESTICHAS, PP ANAGNOSTOU, ME National Technical University of Athens Computer Science Division Department of Electrical and Computer Engineering Heroon Polytechneiou 9 Zografou Athens 15773 Greece Michael G. Kazantzakii was born in Athens Greece in 1962. He received both the Diploma and Ph.D. Degree from the Electrical Engineering Department of the National Technical University of Athens in 1986 and 1992 respectively. During the period 1992–1993 he was a member of the Staff of the Hellenic Navy Research Centre working in the area of underwater acoustics. Since 1994 he has been a researcher at the National Technical University of Athens Department of Electrical Engineering and Computer Science Telecommunications Laboratory. His interests include data mobile and integrated services networks. Panagiotis P. Demestichas was born in Athens Greece in 1967. He received the Diploma in electrical engineering from the National Technical University of Athens (NTUA) Athens in 1993. At present he is a research assistant at NTUA working towards his Ph.D. dissertation. He participated in the BRITE/EURAM-EURATN and in the RACE-TOMQAT and MONET projects. His research interests are in the areas of broadband and mobile networks queueing theory algorithms and complexity theory. He is a Member of the Technical Chamber of Greece. Miltiades E. Anagnostou was born in Athens in 1958. He received the Electrical Engineers Diploma from the National Technical University of Athens (NTUA) in 1981. During the period 1981–1987 he was a teaching assistant at NTUA. In 1987 he received his Ph.D. in the area of computer networks. In 1987–1989 he served the Greek army in the Air Force Research and Development Center. In 1989–1991 he was a Lecturer and since 1991 he has been an Assistant Professor in the Computer Science Division Department of Electrical and Computer Engineering of the NTUA. He teaches courses on modern telecommunications formal specification of protocols stochastic processes and queueing theory. Since 1981 Dr. Anagnostou has been involved

The reason why cellular mobile telephony systems exist is that they allow frequency reuse. Dynamic allocation algorithms improve the network efficiency and the service quality. Dynamic allocation is closely related to the following instantaneous allocation problem: given a number of channels (frequencies), a cell structure and the number of calls to be accommodated in each cell, find the optimum allocation of channels to cells subject to restrictions concerning the distance of cells, where the same frequency can be reused. In this paper we formulate and solve this problem by showing that it can be reduced to a 0-1 programming problem. Finally we present results, and draw subsequent conclusions.

关键词： MOBILE TELEPHONY FREQUENCY ALLOCATION UMTS

来源：评论

学校读者我要写书评

暂无评论

Adaptive Hybrid control of Manipulators On Uncertain Flexible Objects

引用

Advanced Robotics 1995年第5期10卷 469-485页

作者： Wu, Jianqing Luo, Zhiwei Yamakita, Masaki Ito, Koji Department of information and Computer Sciences Toyohashi University of Technology Tempaku-cho Toyohashi 441 Japan Bio-Mimetic Control Research Center The Institute of Physical and Chemical Research (RIKEN) Atsuta-ku Nagoya 456 8-31 Rokuban 3-chome Japan Faculty of Engineering Tokyo Institute of Technology Meguro-ku Tokyo 152 2-12-1 Oh-Okavama Japan Interdisciplinary Graduate School of Science and Engineering Tokyo Institute of Technology Yokohama 226 4295. Nagatsuta Midori-ku Japan

This paper presents an adaptive hybrid control approach for a robot manipulator to interact with its flexible object. Because of its flexibility, the object dynamics influence the robot’s control system, and since it is usually a distributed parameter system, the object dynamics as seen from the robot change when the robot moves. The problem becomes further complicated such that it is difficult to decompose the robot’s position and contact force control loops. In this paper, we approximate the object’s distributed parameter model into a lumped ‘position state-varying’ model. Then, by using the well-known nonlinear feedback compensation, we decompose the robot’s control space into a position control subspace and object torque control subspace. We design the optimal state feedback for the position control loop and control the robot’s contact force through controlling the resultant torque of the object. We use the model- reference simple adaptive control strategy to control the torque control loop. We also study the problem on how to select a reasonable reference model for this control loop. Experiments of a PUMA robot interacting with an aluminum beam show the effectiveness of our approach. © 1996, VSP and Robotics Society of Japan.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Stability of switched and hybrid systems

Stability of switched and hybrid systems

引用

IEEE Conference on Decision and control

作者： M.S. Branicky Laboratory for Information and Decision Systems Department of Electrical Engineering and Computer Science Center for Intelligent Control Systems Massachusetts Institute of Technology USA

This paper outlines some preliminary work on the stability analysis of switched and hybrid systems. The hybrid systems considered are those that combine continuous dynamics, represented by differential or difference equations, with finite dynamics usually thought of as being a finite automaton. Here, we concentrate on the continuous dynamics and model the finite dynamics as switching among finitely many continuous systems. We introduce multiple Lyapunov functions as a tool for analyzing Lyapunov stability of such "switched systems". We use iterated function systems theory as a tool for Lagrange stability. We also discuss the case where the switched systems are indexed by an arbitrary compact set.< >

关键词： Stability Switched systems Difference equations Differential equations Automata Lyapunov method Intelligent control Lagrangian functions control systems Laboratories

来源：评论

学校读者我要写书评

暂无评论

Efficient scheduling of fine grain parallelism in loops 26

Efficient scheduling of fine grain parallelism in loops

引用

IEEE/ACM International Symposium on Microarchitecture (MICRO)

作者： M. Rajagopalan V. H. Allan Department of Computer Engineering and Science Case Western Reserve University Cleveland OH USA General Motors NAO R and D Center Warren MI USA Faculty of Mechanical Engineering Department of Measurement and Control University of Duisburg-Essen Duisburg Germany

ISBN: (纸本)9780818652806

Anti-dependencies are a major cause of bottleneck in software pipelining. Anti-dependencies can be removed in software by code duplication as in the technique of modulo variable expansion. However, it is possible to eliminate anti-dependencies in hardware. So far, two such VLIW architectures have been proposed: polycyclic and URPR-1 architectures. These architectures also introduce attractive solutions for the memory contention problem in general. We, on the other hand, propose a more cost-effective architecture for the same purpose: SRFA. SRFA is based on "shifting register files".< >

关键词： VLIW computer architecture Pipeline processing Hardware Registers NASA Research and development Delay

来源：评论

学校读者我要写书评

暂无评论

An approach to the direct analysis of transient stability

引用

European Transactions on Electrical Power 1993年第3期3卷 241-248页

作者： Djukanovic, M.B. Sobajic, D.J. Pao, Y.‐H. Miodrag B. Djukanovic (1959) received his B.S. M.Sc. and Ph.D. degrees in Electrical Engineering from the University of Belgrade/Yugoslavia in 1982 1985 and 1992 respectively specializing in electric power systems. In 1984 he joined the Electrical Engineering Institute “Nikola Tesla” in Belgrade where he was working on the scientific studies in the field of power systems planning operation and control. In 1985 and 1990 he was appointed as a research scholar at the Royal Institute of Technology Stockholm and Case Western Reserve University Cleveland Ohio. His major in- terests are in the area of power system analysis steady-state and dynamic security and application of neural networks in electric power systems. (Electrical Engineering Institute “Nicola Tesla” ul. Koste Glavinica 8A YU-11000 Belgrad T +3811/2351-619 Fax + 3811/2351-823) Dejan J. Sobajic (1949) received the B.S.E.E. and the M.S.E.E. degrees from the University of Belgrade/Yugoslavia in 1972 and 1976 respectively and the Ph.D. degree from Case Western Reserve University Cleveland Ohio in 1988. At present he is with the Department of Electrical Engineering and Applied Physics Case Western Reserve University Cleveland. He is also the Engineering Manager of A1 WARE Inc. Cleveland. His current research interests include power system operation and control neuralnet systems and adaptive control. He is a member of the IEEE Task Force on Neural-Network Applications in Power Systems and of the IEEE Intelligent Controls Committee. He is the Chairman of the International Neural-Networks Society Special Interest Group on Power Engineering. (Case Western Reserve University Department of Electrial Engineering and Computer Sciences Glennan Building Ohio 44 106 USA T + 1216/421-2380 Fax +1216/368-8776) Yoh-Han Pao (1922) has been a Professor of Electrical Engineering and Computer Science at Case Westem Reserve University (CWRU) Cleveland Ohio since 1967. He has served as chairman of the University's Electrical Engineering Department

The Transient Energy Function (TEF) method has been intensely investigated over the last decade as a reliable and accurate tool for transient stability assessment of multimachine power systems. In this paper we propose the Potential Energy Boundary Surface (PEBS) based method for direct analysis of transient stability. The critical value of transient energy and the Critical Clearing Time (T_CCT) are evaluated without the need for successive calculation and memorization of the system kinetic and potential energy values along the sustained fault trajectory. The method is used for determination of output features in the training phase of the neural‐net based transient security assessment. The proposed approach is tested on the well‐known ten‐generator New England test system demonstrating the validity and accuracy of obtained results. Copyright © 1993 John Wiley & Sons, Ltd.

关键词：

来源：评论

学校读者我要写书评

暂无评论

A next generation expert system for flexible assembly

引用

1992 IEEE International Conference on Systems engineering

作者： Rubin, Stuart H. American Society for Engineering Education Department of Computer Science Central Michigan University Naval Command Control and Ocean Surveillance Center San DiegoCA92152-5000 United States

ISBN: (纸本)0780307348

A major technological impediment to increasing productivity in the manufacturing sector is the relative absence of automation at most stages of the product design process. One such stage involves the translation of non-procedural goal files - describing the desired result of same aspect of the manufacturing process - into procedural task files. The task files detail the exact sequence of required steps as typified by an assembly operation. Flexibility is introduced with an expert translator. The technique provides for coordination among the assembly robots and minimizes costly down-time. The system has been implemented in C and is supported by the Sun 3/50 platform. An advanced prototype has been implemented at NCCOSC on a DAP-610 super computer. © 1992 IEEE.

关键词： Expert systems

来源：评论

学校读者我要写书评

暂无评论

Modelling the Oxytetracycline Fermentation Process using Multi-layered Perceptrons

引用

IFAC Proceedings Volumes 1992年第2期25卷 415-418页

作者： N.A. Jalel D. Tsaptsinos A.R. Mirzai J.R. Leigh K. Dixon Industrial Control Center The Polytechnic of Central London London W1M 8JS UK Department of Computer Engineering University of Science and Technology Tehran Iran Pfizer Ltd. Sandwich CT13 9NJ Kent UK

This paper illustrates how alternative neural network architectures were developed and applied to the modelling and estimation of the internal variables of the highly nonlinear oxytetracycline process. A wide range of... 详细信息

关键词： Neural Networks Fermentation processes Modeling Estimation control applications

来源：评论

学校读者我要写书评

暂无评论

Simultaneous H2/H∞ optimal control with state feedback

Simultaneous H2/H∞ optimal control with state feedback

引用

American control Conference (ACC)

作者： Mario A. Rotea Pramod P. Khargonekar Center for Control Sciences and Dynamical Systems University of Minnesota Minneapolis MN USA Department of Electrical Engineering and Computer Science University of Michigan Ann Arbor MI USA

In this paper we consider a mixed H 2 /H ∞ -optimal control problem. It is assumed that the plant as well as the feedback controller are finite-dimensional and linear time-invariant, and that the plants state is available for feedback. More specifically, among all the state-feedback controllers that minimize the H 2 -norm of a closed loop transfer matrix, we give necessary and sufficient conditions for the existence of a controller that also satisfies a prescribed H ∞ -norm bound on some other closed loop transfer matrix. When these conditions are satisfied, the solution to the above problem is also a global solution to the constrained optimization problem of minimizing an H 2 -norm performance measure subject to an H ∞ -norm constraint. We also give state-space formulae for computing the solutions. An example is given in which all solutions to the constrained optimization problem are necessarily dynamic, i.e, there is no static gain solution even though plant state is available for feedback. A conclusion of this work is that a priori assumptions on the structure of the solutions to mixed H 2 /H ∞ problems could turn out to be conserative.

关键词： Optimal control Hydrogen State feedback Sufficient conditions Performance evaluation Gain measurement Tellurium Performance gain Ice Robustness

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：