检索结果-内蒙古大学图书馆

IEEE International Conference on systems, Man and Cybernetics

作者： Xuedong Chen K. Watanabe K. Izumi Faculty of Computer Science and System Engineering Graduate School of Science and Engineering USA Department of Advanced Systems Control Engineering Graduate School of Science and Engineering Japan Faculty of Science and Engineering Department of Mechanical Engineering Saga University Honjomachi Saga Japan

A new approach to analysis of robot stability is presented by defining the statically stable area for the foot placement. The proposed approach is applied not only to generate the free gait for a quadruped robot walking in difficult terrain, but also to judge the robot stability. The effectiveness of this method is demonstrated by a practical example.

关键词： Leg Robot kinematics Legged locomotion Foot Stability analysis systems engineering and theory control engineering Mechanical engineering

来源：评论

学校读者我要写书评

暂无评论

Interactive on-line evaluation of robot motion control

Interactive on-line evaluation of robot motion control

引用

IEEE Conference on control Technology and Applications (CCTA)

作者： A. Valera A. Robertsson K. Nilsson R. Johansson Department of System Engineering & Automation Valencia Technical University Valencia Spain Department of Automatic Control Lund Institute of Technology Lund University Lund Sweden Lund Institute of Technology Department of Computer Science Lund University Lund Sweden

This paper presents a new real-time architecture for motion control of industrial robots. The new control system obtained has two main advantages: first it provides a total open control architecture and the second advantage is the simplicity and the interactivity of the platform developed. Experimental evaluation of a passivity-based control scheme shows the benefits of the architecture which is unique in the sense that open and advanced control can be combined with built-in safety logic as required in industrial applications.

关键词： Robot motion Motion control Robot control Industrial control control systems Electrical equipment industry Service robots Robot sensing systems Safety Logic

来源：评论

学校读者我要写书评

暂无评论

Mixed abstraction level hardware synthesis from SDL for rapid prototyping

Mixed abstraction level hardware synthesis from SDL for rapi...

引用

International Workshop on Rapid system Prototyping (RSP)

作者： O. Bringmann A. Muth F. Slomka W. Rosenstiel G. Farber R. Hofmann Wilhelm-Schickard-Institut für Informatik Department of Computer Engineering Universität Tubingen Germany Laboratory for Process Control and Real-Time Systems Technische Universitä MTünchen Germany Department of Computer Architecture and Performance Evaluation Universität Erlangen Nürnberg Germany

SDL is currently gaining interest as a system level specification language for HW/SW codesign. Automated synthesis of SDL in hardware so far had problems with its efficiency. The investigations on the resource usage of SDL-to-VHDL designs presented in this paper identify two key challenges: minimizing the overhead introduced by SDL process infrastructure, and choosing the appropriate synthesis method. This paper presents a framework for SDL hardware synthesis where VHDL code generation, high-level synthesis and RT-level synthesis are combined. A configurable run-time environment implements services like data handling and message passing in efficient, hand-coded library components, which take into account properties of the target architecture. For these components RT-level synthesis was found to be suitable. The behavior of each SDL process on the other hand is freely specified by the system designer. Depending on the type of application, i.e. complex data-oriented or control-oriented either high-level synthesis, RT-level synthesis, or a combination of both can prove to be optimal.

关键词： Hardware Prototypes control system synthesis Timing High level synthesis computer architecture Resource management Arithmetic High performance computing Design engineering

来源：评论

学校读者我要写书评

暂无评论

Definition of evaluation criteria for system development acquisition modeling and simulation

引用

NAVAL ENGINEERS JOURNAL 1999年第1期111卷 55-64页

作者： Leite, MJ Mensh, DR Michael J. Leite:is a Principal Engineer with PRC Inc. a division of Litton Industries. He supports combat system engineering for theater air and missile defense. His other tasks have included the command and control for the AEGIS shipbuilding program systems engineering for the 21st Century Surface Combatant combat system survivability and the development of NATO standardization agreements for naval ordnance. He was previously a Senior Engineer with San Diego Gas & Electric with responsibility for its energy application and lighting programs. Prior to joining SDG&E Mr. Leite was a commissioned officer in the U.S. Navy where he served in operations and engineering assignments. Following active duty he accepted a Naval Reserve commission and has retired with the rank of Captain. His assignments included command operational and engineering tours. Mr. Leite has also served as an expert witness in admiralty and engineering matters. He is a gradate of the University of California Berkeley with a Bachelor of Science Degree in Engineering and also holds a Masters Degree in Business Administration from National University in San Diego. Mr. Leite is a Registered Professional Engineer in the States of California and Minnesota. Mr. Leite is a member of ASNE ASCE MORS the Illuminating Engineering Society and the U.S. Naval institute. Dennis Roy Mensh:is a Senior Engineer with PRC Inc. a division of Litton Industries in Crystal City VA where he supports modeling and simulation tasking for combat systems. He received BS and MS degrees in applied Physics from Lopola College in Baltimore MD and the American University in Washington DC. He has also completed the course work towards a Ph.D. degree in computer science specializing in the fields of Operations Reseurch Anabsis Systems Analysis and Computer Modeling and Simulation. Previously he was employed at the White Oak Laboratory of the Naval Surface Warfare Carter in Silver Spring MD where he worked in the areas of naval sensor and weapon system analysis

This paper defines, develops and examines a set of generic analysis tools that can be applied to Models and Simulations at the systems engineering level of fidelity. The tools examine the performance and effectiveness of Sensors;Weapons;and Battle Management, Command, control, Communications, computers, and Intelligence ((BMCI)-I-4) systems and equipment. The Measures of Performance (MOPs), Measures of Effectiveness (MOEs) and Measures of Force Effectiveness (MOFEs) were extracted from the Modular Command and control Structure Paradigm which was developed at the Naval Postgraduate School. The paradigm provides for the development of evaluation criteria (MOPs, MOEs, and MOFEs) in a framework that ensures the traceability of system performance and effectiveness to the system operational requirements as specified in the Operational Requirements Document (ORD). Also, the analysis tools provide insight and valid estimates of numerical measures of the defined system functionality threads, which represent the system's operational requirements as specified in the ORD. The tools are directly transferrable and applicable to test and evaluation exercise events which are conducted in support of the development and acquisition of systems and equipment. Once the levels of system performance have been defined, the Paradigm generates a quantitative database that becomes a useful tool in system tradeoffs and selection. Once the alternative system suites have been defined, the suites can be analyzed in terms of system functionality threads and their corresponding performance capabilities versus cost.

关键词： Naval vessels

来源：评论

学校读者我要写书评

暂无评论

Probabilistic risk analysis of diesel power generators onboard ships

引用

NAVAL ENGINEERS JOURNAL 1999年第3期111卷 35-58页

作者： Ayyub, BM Karaszewski, ZJ Wade, M Bilal M. Ayyub.:is a Professor of Civil Enginnering and the Director of the Center for Technology and Systems Management at the University of Maryland (College Park). He is also a researcher and consultant in the areas of structural engineering inspection methods and practices reliability and risk analysis. He completed his B.S. degree in civil engineering in 1980 and completed both the M.S. (1981) and Ph.D. (1983) in civil engineering at the Georgia Institute of Technology. Dr. Ayyub has an extensive background in uncertainty modeling and marine structural reliability marine structures uncertainty modeling and anaylsis and mathematical medeling using the theories of probability statistics and fuzzy sets. He has completed several research projects that were funded by the NSF USCG USN the USACE ASME and several engineering companies. Dr. Ayyub served the engineering community in various capacities through societies that include ASNE ASCE ASME SNAME IEEECS and NAFIPS. He is the authour and co-author of about 250 publications in journals and conference proceedings and reports. His publications include edited books textbooks and book chapters. Dr. Ayyub is the only double recipient of the ASNE “Jimmie” Hamilton Award for the best papers in the Naval Engineers Journal in 1985 and 1992. Also he received the ASCE “Outstanding Research Oriented Paper” in the Journal of Walter L. Huber Research Prize in 1997 and the K.S. Fu Award of NAFIPS in 1995. He is a registered Professional Engineer (PE) with the State of Maryland. Zbigniew J. Karaszewski:is the Associate Director of the University of Maryland's Center for Technology and Systems Management and technical director of the Center for Maritime Leadership. He is a Systems Engineering and Management Consultant specializing in life cycle system support business systems auditing and risk management and loss prevention. Mr. Karasezewski has 30 years of experience in the field of systems performance analysis and management as a practitioner and teacher

In this paper, a methodology and guidelines for applying risk methods in design and operation of maritime systems were developed and demonstrated using a case study of marine diesel generators. The methodology consists of several modules that include system definition based on functional and performance requirements, definition of dependencies among subsystems, data collection and reduction, reliability and risk analyses, and results reduction for use in decision analysis. The methodology was used to assess and analyze typical service diesel generators found onboard ships. The analysis included the generation of cut sets for the overall reliability of the system. The most likely failure scenarios were determined by demonstration as the failure of fuel supply components. The results are consistent with previous findings of the U.S. Coast Guard.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Neural Computation of Mutual Coupling Coefficients of Electrically Thin and Thick Rectangular Microstrip Antennas

Neural Computation of Mutual Coupling Coefficients of Electr...

引用

1998 International Conference on Neural Networks and Brain(ICNN&B’98)

作者： Kerim GNEY Seref SAGIROGLU Mehmet ERLER Intelligent Antenna Design Research Group Electronic Engineering DepartmentFaculty of EngineeringErciyes University Intelligent System Research Group Control and Computer Engineering DepartmentFaculty of EngineeringErciyes University

A new simple method based on artificial neural networks for calculating the mutual coupling coefficients between two identical probe-feed rectangular microstrip antenna elements with thin and thick substrates in E- and H-plane coupling configurations has been *** learning algorithms such as the backpropagation(BP),the deltabar -delta(DBD),the quick backpropagation(QP),the cumulative delta(CD) rules,and the genetic algorithm (GA) are used to train the *** mutual coupling coefficient results obtained by using the neural models are in very good agreement with the experimental results available in the literature.

关键词： net DBD Neural Computation of Mutual Coupling Coefficients of Electrically Thin and Thick Rectangular Microstrip Antennas

来源：评论

学校读者我要写书评

暂无评论

Vibration damping in elastic robotic structures via sliding modes

引用

Journal of Field Robotics 1998年第9期14卷

作者： G. Bartolini W. Caputo M. Cecchi A. Ferrara L. Fridman Department of Communication Computer and System Sciences University of Genova Via Opera Pia 13 16145 Genova Italy Samara Institute of Architecture and Civil Engineering Metallurgov Street 11-30 443034 Samara Russia

The aim of the present paper is to formulate a simple model of a flexible robotic structure and to propose a class of control strategies based on the sliding modes concept, which appear to be particularly effective in this context. In particular three different approaches will be presented. Each of them clarifies the possible exploitation of sliding modes to damp vibration when both velocities and positions are available for measurements, and in the case in which only elastic forces are known. Since in real cases the delay of propagation of the actuation forces does not allow an ideal sliding mode control and leads to oscillations. In the last part of the paper a control strategy that consists of a discontinuous control law with adaptive gain will be proposed. It also allows damp oscillations in the presence of delay, whereas the classic sliding-modes approach fails. A comprehensive simulation analysis will be provided to complement the theoretical discussion. © 1997 John Wiley & Sons, Inc.

关键词：

来源：评论

学校读者我要写书评

暂无评论

EDITORIAL

引用

International Journal of Robust and Nonlinear control 1998年第4期7卷

作者： Giorgio Bartolini Antonella Ferrara Sarah Spurgeon Department of Electrical and Electronic Engineering University of Cagliari Piazza d'Armi 09123 Cagliari Italy Department of Communication Computer and System Sciences University of Geneva Via Opera Pia 13 Geneva Italy Control Systems Research Department of Engineering University of Leicester Leicester LE1 7RH U.K.

来源：评论

学校读者我要写书评

暂无评论

Digital Adaptive Motion control for a Servo Mechanism

引用

IFAC Proceedings Volumes 1997年第11期30卷 323-328页

作者： T. Suehiro F. Ohkawa T. Hokamura S. Sagara Electronics Division Mechanics & Electronics Research Institute Fukuoka Industrial Technology Center 3-6-1 Norimatsu. Yahatanishi-ku Kitakyushu-shi 807 Japan Department of Control Engineering and Science Faculty of Computer & System Engineering Kyushu Institute of Technology lizuka 820 Japan Department of Control Engineering Faculty of Engineering Kyushu Institute of Technology Tobata Kitakyushu 804 Japan

This paper is concerned with an application of a digital adaptive control system to a servo mechanism. Mechanical systems in general include nonlinearities and additional uncertainties and which result from inertia and friction. So it is difficult to ensure robust performance and high accuracy for motion control. The digital adaptive control system presented here is considered to overcome the above stated problem. Experimental results from a feed drive system demonstrate the effectiveness of the proposed control scheme.

关键词： Adaptive control Servomechanism Nonlinearity Uncertainty Friction

来源：评论

学校读者我要写书评

暂无评论

Overview, current trends and latest results in estimating the effects of load modelling on power-system damping and stability

引用

EUROPEAN TRANSACTIONS ON ELECTRICAL POWER 1997年第2期7卷 107-113页

作者： Milanovic, JV [?]Jovica V. Milanovic (1967) received the Dipl.-Ing. (Elec.) and M.Sc. (Elec. Eng.) degrees from the University of Belgrade. Yugoslavia. in 1987 and I99 I respectively. One year he worked with “Energoproject-MDD”- Engineering and Contracting Co. in Belgrade as an engineer in designing power plants and substations. In late 1988 hejoined the Faculty of Electrical Engineering of the University of Belgrade first as an associate teaching assistant and then (since late 199 I) as teaching assistant at the Dept. of Power Converters and Drives. Between March 1993 and January 1996 he completed his Ph.D. at the University of Newcastle. Australia. at the Dept. of Electrical and Computer Engineering. Since February 1996 he is lecturer at the Department of Electrical Engineering and Computer Science at the University of Tasmania Austnlia. His major interests include synchronous machines and power system transients control and stability. (The University of Tasmania. Dept. of Electrical Engineering and Computer Science GPO Box 252-65 Hobart Tas 7001 Australia.Te1+61 362/262-753 Fax+61 369/262 136. e-mail: Jovica.Milanovic@eecs.utas.edu.au)

The paper presents the overview of load modelling for power-system damping and stability studies with main conclusions summarized from previous research. The attempt has been made to present a cross-section of the most exploited existing load models together with the most important conclusions drawn from their implementation in power-system stability programs. The current trends and latest results in the domain of damping of electromechanical oscillations in power systems are also presented. The effects of load dynamics on damping of electromechanical oscillations were analyzed on the basis of one of generic load models proposed in the past. The recent results further encourage investigation in this area and highlights the importance of proper load modelling.

关键词：

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：