检索结果-内蒙古大学图书馆

Parameter-Dependent Robust H ∞ Filtering for Uncertain Linear Time-Delay systems *

IFAC Proceedings Volumes 2009年第14期42卷 396-401页

作者： Carlos E. de Souza Daniel F. Coutinho Department of Systems and Control Lab. Nacional de Computação Científica Petrópolis RJ25651-075 Brazil Laboratoire d'Automatique Faculté Polytechnique de Mons Boulevard Dolez 31 B-7000 Mons Belgium. On leave from Group of Automation and Control Systems FENG-PUCRS Brazil

This paper presents a delay-dependent convex approach of robust H ∞ filtering for linear continuous-time systems with a varying time-delay in the state and having state-space model matrices that depend affinely on convex-bounded uncertain parameters. The filter design is based on a Lyapunov-Krasovskii functional with affine dependence on the uncertain parameters and is tailored via linear matrix inequalities. Two examples are presented to demonstrate that the proposed filtering approach can outperform existing methods of robust H ∞ filtering for state-delayed linear state-space models with affine dependence on polytopic-type uncertain parameters.

关键词： Filtering state estimation robust H ∞ filtering time-delay systems uncertain systems parameter-dependent Lyapunov function

来源：评论

学校读者我要写书评

暂无评论

Robust H ∞ Filtering for 2-D Discrete-Time Linear systems with Convex-Bounded Parameter Uncertainty

引用

IFAC Proceedings Volumes 2009年第10期42卷 354-359页

作者： Carlos E. de Souza Lihua Xie Daniel F. Coutinho Department of Systems and Control Lab. Nacional de Computação Científica Petrópolis RJ 25651-075 Brazil School of Electrical & Electronic Engineering Nanyang Technological University Singapore 639798 Laboratoire d'Automatique Faculté Polytechnique de Mons Boulevard Dolez 31 B-7000 Mons Belgium. On leave from Group of Automation and Control Systems FENG-PUCRS Brazil

This paper is concerned with the robust H ∞ filtering problem for 2-dimensional (2-D) discrete-time linear systems described by a Fornasini-Marchesini second model with convex-bounded parameter uncertainty. By a suitable transformation, the system is converted into an equivalent difference-algebraic representation. A parameter-dependent Lyapunov function approach is then proposed for the design of a 2-D stationary discrete-time linear filter that ensures a prescribed upper-bound on the H ∞ -norm of the transfer function of the estimation error system for all admissible uncertain parameters. The filter design is given in terms of linear matrix inequalities.

关键词： Filtering state estimation robust H ∞ filtering 2-D systems uncertain systems discrete-time systems parameter-dependent Lyapunov function

来源：评论

学校读者我要写书评

暂无评论

Robust control of Yeast Fed-Batch Cultures for Productivity Enhancement

引用

IFAC Proceedings Volumes 2009年第11期42卷 709-714页

作者： D. Coutinho L. Dewasme A. Vande Wouwer Service d'Automatique Faculté Polytechnique de Mons Boulevard Dolez 31 B-7000 Mons Belgium On leave from the Group of Automation and Control Systems Faculty of Engineering Pontifícia Universidade Católica do Rio Grande do Sul Av. Ipiranga 6681 Porto Alegre-RS 90619-900 Brazil

Abstract This work proposes a robust control strategy for the optimizing control of fed-batch cultures of S. cerevisae. The process dynamics is characterized by a nonlinear kinetic model based on the bottleneck assumption and ethanol inhibition for a possible excess of substrate feeding. The control strategy is based on the feedback linearization technique, where the resulting free linear dynamics is designed so as to ensure a certain robustness to plant parameter variations. A feedforward loop achieves the correct critical substrate value, which is a function of the ethanol and oxygen in the culture medium. In addition, a robust Luenberger-like observer is designed taking plant parameter variations into account. Numerical experiments demonstrate the potential of the proposed approach as a tool for control design of fed-batch cultures.

关键词： robust control feedback linearisation Luenberger observer fermentation process

来源：评论

学校读者我要写书评

暂无评论

TRACKING control IN THE PRESENCE OF NONLINEAR DYNAMIC FRICTIONAL EFFECTS: ROBOT EXTENSION

引用

Asian Journal of control 2008年第3期1卷

作者： M. Feemster D.M. Dawson A. Behal W. Dixon Matthew Feemster received the B.S degree in Electrical Engineering from Clemson University Clemson South Carolina in December 1994. Upon graduation he remained at Clemson University and received the M.S. degree in Electrical Engineering in 1997. During this time he also served as a research/teaching assistant. His research work focused on the design and implementation of various nonlinear control algorithms with emphasis on the induction motor and mechanical systems with friction present. He is currently working toward his Ph.D. degree in Electrical Engineering at Clemson University. Darren M. Dawson was born in 1962 in Macon Georgia. He received an Associate Degree in Mathematics from Macon Junior College in 1982 and a B.S. Degree in Electrical Engineering from the Georgia Institute of Technology in 1984. He then worked for Westinghouse as a control engineer from 1985 to 1987. In 1987 he returned to the Georgia Institute of Technology where he received the Ph.D. Degree in Electrical Engineering in March 1990. During this time he also served as a research/teaching assistant. In July 1990 he joined the Electrical and Computer Engineering Department and the Center for Advanced Manufacturing (CAM) at Clemson University where he currently holds the position of Professor. Under the CAM director's supervision he currently leads the Robotics and Manufacturing Automation Laboratory which is jointly operated by the Electrical and Mechanical Engineering departments. His main research interests are in the fields of nonlinear based robust adaptive and learning control with application to electro-mechanical systems including robot manipulators motor drives magnetic bearings flexible cables flexible beams and high-speed transport systems. Aman Behal was born in India in 1973. He received his Masters Degree in Electrical Engineering from Indian Institute of Technology Bombay in 1996. He is currently working towards a Ph.D in Controls and Robotics at Clemson University. His research focuses on the control of no

In this paper, we extend the observer/control strategies previously published in [25] to an n -link, serially connected, direct drive, rigid link, revolute robot operating in the presence of nonlinear friction effects modeled by the Lu-Gre model. In addition, we also present a new adaptive control technique for compensating for the nonlinear parameterizable Stribeck effects. Specifically, an adaptive observer/controller scheme is developed which contains a feedforward approximation of the Stribeck effects. This feedforward approximation is used in a composite controller/observer strategy which forces the average square integral of the position tracking error to an arbitrarily small value. Experimental results are included to illustrate the performance of the proposed controllers.

关键词： Friction compensation nonlinear control

来源：评论

学校读者我要写书评

暂无评论

PMID OBSERVER DESIGN FOR UNKNOWN INPUT GENERALIZED DYNAMICAL systems

引用

IFAC Proceedings Volumes 2005年第1期38卷 1251-1256页

作者： Zhiwei Gao Steven X. Ding On leave from Department of Automation Tianjin University Tianjin 300072 Institute for Automatic Control & Complex Systems University of Duisburg-Essen

A new design approach of observer is proposed for generalized dynamical systems with unknown input disturbances. By introducing proportional gain, derivative gain and multiple-integral gains, the estimation error dynamics can be guaranteed to be internally proper stable and the disturbance can be de-coupled successfully. The system state and the input disturbance can be asymptotically estimated simultaneously. The proposed observer is then extended to the bilinear generalized system case, bilinear time-delay generalized system case, and is also applied to estimate both system states and output noises for normal system case. Finally, an illustrative example is included.

关键词： Estimation generalized systems multiple-integral observer PID design unknown input disturbances

来源：评论

学校读者我要写书评

暂无评论

Plasma Arc Waste Destruction System (PAWDS) a novel approach to waste elimination aboard ships

引用

NAVAL ENGINEERS JOURNAL 2006年第3期118卷 139-150页

作者： Kaldas, Aida Picard, Isabelle Chronopoulos, Christos Chevalier, Philippe Carabin, Pierre Holcroft, Gillian Alexander, Gary Spezio, Joseph Mann, Jim Molintas, Henry AIDA KALDAS Eng. is the principal author and Technical Manager at PyroGenesis Inc. She is currently leading the process development team of the Plasma Arc Waste Destruction System for applications on board ships. She holds a Bachelor in Chemical Engineering from Cairo University and a Masters in Engineering Science from the University of Western Ontario. She is a member of “l'Ordre des Ingénieurs du Québec” since 1981. Prior to joining PyroGenesis Inc. Mrs. Kaldas has led several development programs working for Orica (formally ICI Explosives)for over 20 years. Her areas of expertise include process optimization and debottlenecking process modeling and particles processing. ISABELLE PICARD ENG. is a Product Development Engineer at PyroGenesis Inc. She is currently part of the process development team of the Plasma Arc Waste Destruction System for applications on board ships. She holds a Bachelor in Chemical Engineering from “école Polytechnique de Montréal”. She is a member of “l'Ordre des Ingénieurs du Québec” since 1995. Prior to joining PyroGenesis Inc. Mrs. Picard has worked as project leader for several development project related to natural gas applications working for The Natural Gas Technologies Center and as Product Development Engineer for the fuel cell industry working for H Power Canada inc. Her areas of expertise include process development and optimization system integration and equipment sizing. CHRISTOS CHRONOPOULOS Eng. is presently a Product Development Engineer at PyroGenesis Inc. Over the last two years Mr. Chronopoulos has worked on the design and development processes for the treatment of all types of wastes. Prior to joining PyroGenesis Inc. Mr. Chronopoulos worked on process engineering and process development in the Fuel Cell industry for a period of two years and also in the Electronic Plating industry for 4 years. He holds a Bachelor's degree in Chemical Engineering from Sherbrooke University. He is a member of “l'Ordre des Ingénieurs du Québec”. PHILIPPE CHEVALIER Eng. is the

The Plasma Arc Waste Destruction System (PAWDS) uses plasma energy, with temperatures over 5,000 degrees C, to rapidly and efficiently destroy combustible waste aboard ships. PAWDS has proven itself to be a viable alternative to traditional incinerators. >> In September 2003, Carnival Cruise Lines were the first to install a PAWDS aboard their 2,056 passenger (plus 1,000 crew members) capacity, M/S Fantasy cruise ship, to treat ship waste including paper, cardboard, plastics, textiles, wood, and food. As of June 2004, it is being operated and maintained solely by Carnival Cruise Lines personnel and has been permitted to operate in port by the Bahamian port authorities. >> The Navy's next generation aircraft carrier, CVN 21, will be equipped with two FAWDS to process all of the non-food combustible solid waste generated with sufficient system redundancy. The US Navy has been jointly developing the PAWDS with PyroGenesis Inc. over the last 6 years. The development efforts in 2004 and 2005 coupled with lessons learned from operation aboard Carnival's cruise ship have resulted in the identification of additional process and design improvements. Source emission testing by an independent laboratory has also demonstrated that the PAWDS easily meets IMO MARPOL requirements for the destruction of solid waste.

关键词： Waste treatment

来源：评论

学校读者我要写书评

暂无评论

Developing a prototype concurrent design tool for composite topside structures

引用

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

来源：评论

学校读者我要写书评

暂无评论

HYBRID SATELLITE AND TERRESTRIAL NETWORKS

引用

INTERNATIONAL JOURNAL OF SATELLITE COMMUNICATIONS 1994年第3期12卷 313-327页

作者： CHITRE, DM SHYY, DJ EPHREMIDES, A GUPTA, S COMSAT Laboratories 22300 Comsat Drive Clarksburg MD 20871–9475 USA. Received his B.Sc. from the University of Bombay India an M.A. in mathematics from the University of Cambridge U.K. and a Ph.D. in physics from the University of Maryland. He is currently an Associate Executive Director of the Network Technology Division at COMSAT Laboratories. He has been involved in research and development activities in ISDN VSAT networks data communications and network systems and architectures. Prior to his current positions Dr. Chitre was a Principal Scientist in the Network Technology Division at COMSAT Laboratories. Dr. Chitre joined COMSAT Laboratories in 1980. He has made major contributions to the analysis and architecture of data communication ISDN and BISDN via satellite. Dr. Chitre directs and participates in the international and national standards activities in ISDN BISDN and data communication as they apply to satellite communication. He was Chairman of the Working Group on Protocols and Network Timing Function of the CCIR/CCITT Joint Ad Hoc Group on ISDN/Satellite Matters during 1990–1992. Currently he is the Chairman of the Working Group on New Technologies in the ITU Intersector Coordinating Group (ICG) on Satellite Matters. Dr. Chitre was a programme manager during 1990 and 1991 on a contract from INTELSAT on systems studies on satellite communications systems architectures for ISDN and broadband ISDN systems. Currently he is the technical manager of the DoD Contract on ATM via satellite demonstration and the programme manager for the INTELSAT contract on analysis and top-level specification of INTELSAT ISDN subnetworks and SDH compatible transport network. Received the B.S. degree in electrical engineering from national Chiao-Tung University Hsin-Chu Taiwan in 1983 and the M.S. and Ph.D. degrees in electrical engineering from Georgia Institute of Technology Atlanta GA in 1986 and 1990 respectively. From June 1987 to October 1987 he worked for the Department of Neurology Emory Univers

The role of satellite communications in networks that provide new services, such as frame relay and multimedia, is investigated. Both passive and active (on-board switching/processing) satellite systems are considered. Novel techniques are developed for each system to demonstrate, via detailed analysis and simulation, how the communications bandwidth agility of multipoint/broadcast satellite channels, and the on-board switching/processing, makes it feasible to provide these new services via hybrid satellite and terrestrial networks in a resource-efficient manner.

关键词： HYBRID NETWORKS ON-BOARD PROCESSING FRAME RELAY

来源：评论

学校读者我要写书评

暂无评论

The Twenty‐first Century Enterprise, Agile Manufacturing and Something Called CALS

World Class Design to Manufacture

引用

World Class Design to Manufacture 1994年第3期1卷

作者： Eric M. Ross The Vice‐President of ProActive Resources Inc. a Rhode Island‐based industrial improvement consulting and training firm. He also serves as the Chair Commercial Application Task Group of the all‐volunteer US CALS/CE Industry Steering Group. Previously he was Director CALS at Intergraph Corporation a worldwide supplier of interactive computer graphic CAD/CAE/CAM systems and Program Director Strategic Enterprise Modernization at BDM International Inc. Mr Ross also served in various technical management and leadership positions in United States Air Force internal and contractor industrial base improvement programmes. He is a member of the American Society for Quality Control the American Production and Inventory Control Society the Automation Forum and the Computer and Automated Systems Association of the Society of Manufacturing Engineers. He holds a BS and an MS degree from Rensselaer Polytechnic Institute and the State University of New York College of Ceramics respectively. He can be contacted at ProActive Resources Inc. Tel/Fax: 401 421 4072 or 10733 Basket Oak Ct. Burke VA 22015 USA.

Success in the twenty‐first century will require many manufacturingenterprises to have the innovative flexibility to respond rapidly tomarket desires, to produce top quality products, to deliver almostinstantaneously, and to provide superb service. Built on leanmanufacturing, the agile manufacturing paradigm is an evolutionary step,partially based on a combination of flexible manufacturing, integratedproduct development and stratgic partnering. An agile manufactuingenterprice is a dynamically reconfigurable organization of independentcompanies which forms individual companies optimized for the specificsof each market opportunity. Key to the success of such a paradigm is theability (for often geographically dispersed functions) to share fullythe technical information required and used for product design,development, validation, production and service. Argues that CALS, astandardized approach to integrated product data management, has thestrategies, approaches, technologies and neutral data formats as well asthe growing international commitment to enable this data sharing.

关键词： Agile production Computer‐aided acquisition and logistic support Co‐operation Flexible organizations Information exchange Manufacturing industry Partnering Product development

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

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：