检索结果-内蒙古大学图书馆

Robust guaranteed cost control for uncertain discrete time-delay systems via dynamic output feedback

systems Analysis Modelling Simulation 2003年第12期43卷 1717-1727页

作者： Guan, X.P. Shi, P. Liu, Y.C. Shi, Y. Institute of Electrical Engineering Yanshan University Qinhuangdao 066004 China Land Operations Division Defence Science and Technology Organization P.O. Box 1500 Edinburgh SA 5111 Australia Department of Automation and Computer-Aided Engineering Chinese University of Hong Kong Shatin N.T. Hong Kong Department of Information and Systems Engineering School of Engineering Kyushu Tokai University 9-1-1 Toroku Kumamoto 862-86852 Japan

The problem of robust guaranteed cost control for a class of time-varying uncertain discrete delay systems is studied. The guaranteed cost control law is implemented by using a dynamic output feedback compensator. The proposed methods are given in terms of linear matrix inequalities (LMIs). A numerical example is given to demonstrate the effectiveness of the proposed methods.

关键词： Discrete time control systems

来源：评论

学校读者我要写书评

暂无评论

Human systems integration and advanced technology in engineering department workload and manpower reduction

引用

NAVAL ENGINEERS JOURNAL 2003年第1期115卷 57-65页

作者： Lively, KA Seman, AJ Kirkpatrick, M KENNETH A. LIVELY graduated from the University of Colorado with a BS in applied mathematics and an MS in mathematics in 1976 and from the Massachusetts Institute of Technology with an MS in electrical engineering and the degree ocean engineer in naval architecture and marine engineering in 1984. He retired from the U.S. Navy in 1989 after 23 years of service. Assignments included electrical officer on the USS Constellation (CV 64) project engineer for the DDG 51 machinery control system (NAVSEA) and DDG 51 Technical Director (NAVSEA). He was vice president of the PDI Division of Bird-Johnson Company from July 1989 to November 1998 where he managed various gas turbine and machinery controls related development projects. He joined Anteon Corporation's Systems Engineering Group as senior controls engineer in December 1998 where he provided technical support to the integrated power systems program (NAVSEA PMS 510) and managed the Office of Naval Research Afloat Laboratory. DR. MARK KIRKPATRICK is currently an independent consultant in human factors and work-load/manning analysis and modeling. He holds a Ph.D. degree in experimental psychology from The Ohio State University and has 34 years of experience in applied human factors. From 1982 through 2000 Dr. Kirkpatrick served as the senior vice president of Carlow International. Prior to joining Carlow in 1982 Dr. Kirkpatrick served as a member of the technical staff at North American Rockwell's Missiles Division and as a project director and vice president for Essex Corporation. His areas of expertise include workload simulation task analysis operator-in-the-loop simulation human performance experimentation statistical analysis and human factors T&E. He has directed and/or participated in human factors projects for the U.S. Navy U.S. Army NASA Department of Transportation the U.S. Nuclear Regulatory Commission and private industry. ANTHONY J. SEMAN III is the technical manager for the reduced ship's crew by virtual presence (RSVP) advanced technology d

Aboard current ships, such as the DDG 51, engineering control and damage control activities are manpower intensive. It is anticipated that, for future combatants, the workload demand arising from operation of systems under conditions of normal steaming and during casualty response will need to be markedly reduced via automated monitoring, autonomous control, and other technology initiatives. Current DDG 51 class ships can be considered as a manpower baseline and under Condition III typical engineering control involves seven to eight watchstanders at manned stations in the Central Control Station, the engine rooms and other machinery spaces. In contrast to this manning level, initiatives such as DD 21 and the integrated engineering plant (IEP) envision a partnership between the operator and the automation system, with more and more of the operator's functions being shifted to the automation system as manning levels decrease. This paper describes some human systems integration studies of workload demand reduction and, consequently, manning reduction that can be achieved due to application of several advanced technology concepts. Advanced system concept studies in relation to workload demand are described and reviewed including. Piecemeal applications of diverse automation and remote control technology concepts to selected high driver tasks in current DDG 51 activities. Development of the reduced ship's crew by virtual presence system that will provide automated monitoring and display to operators of machinery health, compartment conditions, and personnel health. The IEP envisions the machinery control system as a provider of resources that are used by various consumers around the ship. Resource needs and consumer priorities are at all times dependent upon the ship's current mission and the availability of equipment pawnbrokers.

关键词： Naval warfare

来源：评论

学校读者我要写书评

暂无评论

PID-parameter auto-tuner based on embedded MCU

PID-parameter auto-tuner based on embedded MCU

引用

World Congress on Intelligent Control and automation (WCICA)

作者： Chen Jie Sun Demin Xue Meisheng Department of Computer & Information Engineering Anhui of Architecture and Industry Hefei China Department of Automation University of Science and Technology Hefei China

This paper describes an algorithm of PID-parameter tuning with correlation-coefficient identification, which is applied in the auto-tuner of PID-parameters based on an embedded MCU. We have optimized the algorithm acc... 详细信息

关键词： automation Sun Electronic mail Embedded computing computer architecture computer industry Microcontrollers

来源：评论

学校读者我要写书评

暂无评论

e-management of supply chain: General models taxonomy

引用

Human systems Management 2002年第2期21卷 95-113页

作者： Chandra, Charu Kumar, Sameer Smirnov, Alexander V. Industrial and Manufacturing Systems Engineering Department College of Engineering and Computer Science University of Michigan - Dearborn 4901 Evergreen Road Dearborn MI 48128-1491 United States Department of Engineering and Technology Management University of St. Thomas Mail #OSS 101 2115 Summit Avenue St. Paul MN 55105-1079 United States St. Petersburg Institute for Informatics and Automation Russian Academy of Sciences 39 14th line St. Petersburg 199178 Russia

The management of Supply Chain systems is one of the major issues that a firm has to deal with in today's global economy. The purpose of this type of system is to transform incomplete information about the market and available resources into co-ordinated plans for production and replenishment of goods and services in the network formed by co-operating units. One of the goals of Internet-Based Management (e-management) is to facilitate transfer and sharing of data and knowledge in the context of supply chain structures. Knowledge-based modelling tools for supply chain management utilise reusable components and configure knowledge as needed, in order to assist users (agents) in decision-making. This paper discusses a generic development methodology for e-management and conceptual modelling of supply chains. For illustration, applications from the automotive industry have been utilised.

关键词： Industrial management

来源：评论

学校读者我要写书评

暂无评论

A formal mapping of static information models into dynamic models for process planning and control purposes

A formal mapping of static information models into dynamic m...

引用

International Workshop on Discrete Event systems, WODES

作者： P. Falkman J. Nielsen B. Lennartson Control and Automation Laboratory Department of Signals and Systems Chalmers University of Technology Gothenburg Sweden Computer Systems for Design and Manufacturing Department of Production Engineering Kungliga Tekniska Högskolan Stockholm Sweden

A formal mapping between static information models and dynamic models is presented. The static information models are given according to an international standard for product, process and resource information exchange. The dynamic models are described as discrete event systems. The product, process and resource information is automatically converted into product routes and used for simulation, controller synthesis and verification. The focus in this paper is on resource booking problems. A high level language, which combines Petri nets and process algebra, is presented and used for specification of desired routes. A main implication of this methodology is to enable the reuse of process information when creating dynamic models for process control. This method also enables simulation and verification to be conducted early in the development.

关键词： Process planning Process control Automatic control Manufacturing systems Petri nets Algebra Signal mapping Manufacturing automation computer aided manufacturing Manufacturing processes

来源：评论

学校读者我要写书评

暂无评论

Sigma-Pi Cascade Extended Hybrid Neural Network

引用

Journal of Advanced Computational Intelligence and Intelligent Informatics 2002年第3期6卷 126-134页

作者： Iyoda, Eduardo Masato Hirota, Kaoru Zuben, Fernando J. Von Department of Computational Intelligence and Systems Science Interdisciplinary Graduate School of Science and Engineering Tokyo Institute of Technology 4259 Nagatsuta Midori-ku Yokohama226-8502 Japan Department of Computer Engineering and Industrial Automation School of Electrical and Computer Engineering State University of Campinas P.O. Box 6101 Campinas-SP13083-970 Brazil

A nonparametric neural architecture called the Sigma-Pi Cascade extended Hybrid Neural Network σπ-(CHNN) is proposed to extend approximation capabilities in neural architectures such as Projection Pursuit Learning (PPL) and Hybrid Neural Networks (HNN). Like PPL and HNN, σπ-CHNN also uses distinct activation functions in its neurons but, unlike these previous neural architectures, it may consider multiplicative operators in its hidden neurons, enabling it to extract higher-order information from given data. σπ-CHNN uses arbitrary connectivity patterns among neurons. An evolutionary learning algorithm combined with a conjugate gradient algorithm is proposed to automatically design the topology and weights of σπ-CHNN. σπ-CHNN performance is evaluated in five benchmark regression problems. Results show that σπ-CHNN provides competitive performance compared to PPL and HNN in most problems, either in computational requirements to implement the proposed neural architecture or in approximation accuracy. In some problems, σπ-CHNN reduces the approximation error on the order of 10-1 compared to PPL and HNN, whereas in other cases it achieves the same approximation error as these neural architectures but uses a smaller number of hidden neurons (usually 1 hidden neuron less than PPL and HNN). © 2002 Fuji technology Press. All rights reserved.

关键词： Genetic algorithms

来源：评论

学校读者我要写书评

暂无评论

Active suspension design based on mixed uncertainty modelling 6

Active suspension design based on mixed uncertainty modellin...

引用

6th European Control Conference, ECC 2001

作者： Gaspar, P. Szaszi, I. Balas, G.J. Bokor, J. Systems and Control Laboratory Computer and Automation Research Institute Hungarian Academy of Sciences Kende u. 13-17 Budapest Hungary Department of Control and Transport Automation Budapest University of Technology and Economics Muegyetem rkp. 3 Budapest Hungary Department of Aerospace Engineering and Mechanics University of Minnesota 107 Akerman Hall 110 Union St. SE MN United States

ISBN: (纸本)9783952417362

This paper proposes the mixed lì synthesis for active suspension problems. With this method, a robust compensator that achieves nominal performance and meets robust stability specifications can be designed. Moreover, both the real parametric and the complex uncertainties are treated together, which usually yields a less conservative compensator than the traditional robust methods. In this paper, the design strategy is applied for active suspension, which involves real parametric uncertainties. The results are compared with the traditional LQG, complex lì and mixed lì methods. © 2001 EUCA.

关键词： Robust control

来源：评论

学校读者我要写书评

暂无评论

Robust PI and PID controllers including Smith predictor structure

Robust PI and PID controllers including Smith predictor stru...

引用

American Control Conference (ACC)

作者： B. Kristiansson B. Lennartson Department of Electrical and Computer Engineering Chalmers Lindholmen Goteborg Sweden Department of Signals and Systems Control and Automation Laboratory Chalmers University of Technology Goteborg Sweden

In this paper PI and PID controllers augmented by a Smith predictor structure are compared to ordinary PI and PID controllers, for plants with medium and great time delays. The comparison is based an a systematic evaluation method, where both robustness and performance aspects in different frequency regions are taken into account. The results show that a Smith predictor increases performance somewhat for a PID controller when the time delay is moderate. For great time delays, however, the improvement is insignificant. An important remark is that it is necessary to include the predictor structure in the design to get acceptable robustness properties. For a PI controller the benefits from a predictor are mostly small or negligible independent of time delay. Most important is, however that a derivative part obviously will bring significantly greater improvement than a Smith predictor to a system with a PI controller. This result is somewhat surprising, since Smith predictors are normally used together with PI and not with PID controllers. Furthermore, it is sometimes argued that it is no use to include derivative action for plants with significant time delay.

关键词： Robust control Three-term control Control systems Delay effects Automatic control Frequency Robustness Robust stability automation Pi control

来源：评论

学校读者我要写书评

暂无评论

Evaluation of end-to-end QoS mechanisms in IP networks 1

引用

1st International Conference on Networking, ICN 2001

作者： Shaikh, Fayaz A. McClellan, Stan Center of Telecommunications Education and Research Department of Electrical and Computer Engineering University of Alabama at Birmingham 1150 Tenth Avenue South BEC 253 BirminghamAL35294-4461 United States IP Architecture Group Technology and Systems Engineering Compaq Telecommunications 1255 West Fifteenth Street Suite 8000 PlanoTX75075 United States

ISBN: (纸本)3540423036

The primary challenges in the deployment of Voice over Internet Protocol technology include Quality of Service (QoS) guarantees in the form of stringent bounds on end-to-end delay, jitter and loss, as well as rigorous validation of subjective and objective end-to-end quality. The performance of subjective tests to indirectly optimize transported voice quality requires test administrators to modify and compare the effect of network configurations for a large population of users. The impasse between control of network configuration and control of effective test design has prompted us to approach this joint optimization problem from the perspective of a programmable network testbed. The Video and Voice over IP Environment for Research (VVIPER) has been designed for this purpose. This paper describes design and implementation of this testbed, and presents samples of the performance results gathered for various popular IP-based QoS technologies. © Springer-Verlag Berlin Heidelberg 2001.

关键词： Testbeds

来源：评论

学校读者我要写书评

暂无评论

Tuning buffer size in the multimedia router (MMR)

Tuning buffer size in the multimedia router (MMR)

引用

International Symposium on Parallel and Distributed Processing (IPDPS)

作者： B. Caminero C. Carrion F.J. Quiles F.J. Duato S. Yalamanchili Department of Computer Science. Escuela Politecnica Superior University de Castilla-La Mancha Albacete Spain Department of Information Systems and Computer Architecture University of Politecnica de Valencia Valencia Spain School of Electrical and Computer Engineering Georgia Institute of Technology Atlanta GA USA

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：