检索结果-内蒙古大学图书馆

Decentralized Predictive Control ofthe Heat Dynamics of a Greenhouse

IFAC Proceedings Volumes 2001年第11期34卷 152-157页

作者： S.G. Tzafestast E.J. Kyriannal K.G. Arvanitis N. Sigrimis National Technical University of Athens. Dept. of Electrical and Computer Engineering Intelligent Robotics and Automation Laboratory Zographou 15773 Athens GREECE. Agricultural University of Athens Department of Agricultural Engineering Athens 11855 GREECE.

This paper proposes a decentralized model - based predictive controller approach for the design of discrete-time control systems for the regulation of the air temperature and heat supply in greenhouses. A state space model is used at the greenhouse to predict the corresponding indoor temperature over a long-range time period. The sun radiation and outdoor temperature are treated as external disturbances tliat affect the overall system dynamics. A series of energy fluxes consist the heating system and the predictive controllers have proved to be powerful in controlling the supply temperature.

关键词： Decentralized control Predictive control Greenhouse heat dynamics control

来源：评论

学校读者我要写书评

暂无评论

Decentralized Adaptive Output Regulation for Large-Scale Nonlinear Systems 1

引用

IFAC Proceedings Volumes 2001年第6期34卷 627-632页

作者： Ye Xudong Jie Huang Dept. of Electrical Engr. Zhejiang University 310027 Hangzhou P. R. China Department of Automation and Computer-Aided Engineering The Chinese University of Hong Kong Shatin N.T. Hong Kong

This paper addresses the decentralized adaptive output regulation problem and solve it for a class of large-scale nonlinear systems with commands to be tracked (or disturbances to be rejected) produced by a linear neutrally stable exosystem. An adaptive control scheme is proposed that leads to a closed-loop system with the property that for any initial states of the system and exosystem, all close-loop signals are bounded and asymptotic tracking and/or disturbance rejection is achieved.

关键词： Output regulation decentralized control adaptive control nonlinear systems large-scale systems

来源：评论

学校读者我要写书评

暂无评论

On simulation based analysis and synthesis of hierarchical network sturctures 6

On simulation based analysis and synthesis of hierarchical n...

引用

6th European Control Conference, ECC 2001

作者： Tanevska, Dijana J. Dimirovski, Georgi M. Stankovski, Mile J. Jing, Yuanwei Makedonski Telekomunikacii AD Orce Nikolov Str. b.b. SkopjeMK-91000 Macedonia Inst. of Automation and Systems Engg. Faculty of Electrical Engg. SS Cyril and Methodius University SkopjeMK-1000 Macedonia Department of Computer Engg. Faculty of Engineering DOGUS University Kadikoy-IstanbulTR-81010 Turkey Dept. of Automatic Control and Control Eng. School of Information Science and Engineering Northeastern University Shenyang Liaoning110006 China

ISBN: (纸本)9783952417362

Analysis of complex systems such as hierarchically structured network systems that are employed in modelling and analysis various aspects and issues of control and management in telecommunications is investigated. Theory of graphs and binary matrices appear to be most suitable tools for modelling the overall structure of complex systems, in general, and of systemic hierarchies, in particular. A systematic methodology has been developed for computer simulation analysis and detecting general hierarchies in communications networking as well as for synthesis of system hierarchies. This methodology is an improved extension of Warfield's technique. © 2001 EUCA.

关键词： Discrete event simulation

来源：评论

学校读者我要写书评

暂无评论

Intelligent Manufacturing Systems: Intelligent Protocols for Communication Within FMS

引用

IFAC Proceedings Volumes 2001年第17期34卷 261-267页

作者： Dimirovski G.M. A.T. Dinibütün D.J. Tanevska A. Okatan S. Akyokus DOGUS University Dept. of Computer Engineering Faculty of Engineering Acibadem - Kadikoy TR-81010 Istanbul Turkey FAX: +90-216/327-9631. SS Cyril & Methodius University Inst of Automation & Systems Engineering Faculty of Electrical Engineering MK-1000 Skopje Rep. of Macedonia Makedonski Telekomunikacii AD Orce Nikolov Str. B.B. MK-1000 Skopje Rep. of Macedonia

In this paper recent results on intelligent communication protocols (ICP) tailored for applications within flexible manufacturing systems (FMS) are presented. These have been derived on the grounds of the concept of ICP emulation by using the technique of object oriented modelling and emulation programming. The resulting ICP have been tested through their application in parallel simulation of complex medium size FMS. Developed models have been derived using three alternatives: math-analytical queue, adequate Petri-net, and appropriate object-oriented models. Some of simulations results obtained illustrate this novel development in ICPs for FMSs. Copyright ©2001 IFAC

关键词： Flexible manufacturing systems Information flow Intelligent communication protocols Object oriented modeling Petri nets

来源：评论

学校读者我要写书评

暂无评论

A Lorentz-group based adaptive control for electro-mechanical systems

A Lorentz-group based adaptive control for electro-mechanica...

引用

Proceedings 2001 IEEE/RSJ International Conference on Intelligent Robots and Systems. Expanding the Societal Role of Robotics in the the Next Millennium (Cat. No.01CH37180)

作者： J.K. Tar I.J. Rudas K. Jezernik J.F. Bito S.J. Torvinen Institute of Mathematical and Computational Sciences Budapest Polytechnic Budapest Hungary Centre of Robotics and Automation Budapest Polytechnic Hungary Faculty of Electrical Engineering and Computer Science Institute of Robotics University of Maribor Maribor Slovenia Dept. of Mechanical Eng. Institute of Production Engineering Tampere University of Technology Tampere Finland

An efficient approach for the adaptive control of approximately and partially known mechanical systems, like traditional soft computing, uses "uniform structures" for modeling, but these structures are obtained from certain Lie groups as the symplectic group or the generalized Lorentz group. This approach considerably reduces the number of free parameters in the model. Until now its efficiency was investigated for mechanical uncertainties and external dynamic interactions. In this paper the behavior of the electric drives are also included in the investigations. A 1-DOF mechanical system, a pendulum driven by a DC motor in a computed torque control, is investigated via simulation. The necessary torque is calculated from a formal primitive mechanical model and an adaptivity rule. For adaptivity real number scaling and the generalized Lorentz group elements are used. It is concluded that a single adaptive loop can compensate for the mechanical and the electrical uncertainties simultaneously.

关键词： Adaptive control Mechanical systems Uncertainty Convergence Robotics and automation DC motors Robots computer science Production engineering Neural networks

来源：评论

学校读者我要写书评

暂无评论

Optimal Pricing Strategies Based on Time Delay in Multi-Service Networks

引用

IFAC Proceedings Volumes 2001年第3期34卷 105-110页

作者： Fude Jin Yuanwei Jing Zhianhua Zhou G.M. Dimirovske K. Sohraby Institute of Control Science School of Information Science & Engineering Northeastern University Shenyang Liaoning 110006 P.R. of CHINA +86-24/2389-3138 Inst. of Automation & Systems Engg. Faculty of EE SSs. Cyril & Methodius University Karpos 2 B.B. P.D.Box 574:MK-1000 Skopje Rep.of Macedonia Fax# +90-216/327-9631 Dept. of Computer Science & Telecommunications University of Missouri-Kansas Kansas City M064110 USA

The problem of the pricing equilibrium in multi-service priority-based networks isstudied by using Stackelberg game theory. Some concepts of the game theory were revisited first. Then, the existing results on two-user, twolevel Nash problem was reviewed briefly. Following this background, a new one-leader, two-level, two-user incentive Stackelberg strategy was derived and proved by employing the time delay involved.

关键词： Communication networks game theory incentives optimal systems priority Stackelberg game

来源：评论

学校读者我要写书评

暂无评论

Control Incentives for Leader-Follower Model in Communication Networks and Softcomputing Potential

引用

IFAC Proceedings Volumes 2001年第3期34卷 15-26页

作者： G.M. Dimirovski Yuanwei Jing Siying Zhang K. Sohraby Inst. of Automation & Systems Engg. SS Cyril & Methodius University Skopje. R. of Macedonia. and DOGUS University. 81010 Istanbul-Kadikoy R. of Turekey Fax# +90-2 1 6-32 7-9631 Institute of Control Science. School of Information Science & Engineering Northeastern University. Shenyang. Liaoning. 110006. P.R. of China Fax# +86-24-2389-3138 Dept. Of Computer Science & Telecommunications. University of Missouri - Kansas Kansas City. M064J JO. USA

The problem of networking supervision and traffic rate control in multi-service network systems is studied by using concepts of Nash equilibrium and Stackelberg strategy under assumption of two-level system architecture. Models of users, network provider and overall system in game-theoretic setting are presented. Linear Stackelberg incentive strategies are derived for both elastic and non-elastic traffic, and verified using Kelly's example. Outlines of the two-level integrated control and supervision architecture, and of the proposed fuzzy-Perti-net supervisor are given.

关键词： Communication networks fuzzy Petri-nets game theory incentives optimisation Stackelberg strategies

来源：评论

学校读者我要写书评

暂无评论

Transmission of multimedia information on micro environment via Internet

Transmission of multimedia information on micro environment ...

引用

作者： Lai, King W. C. Fung, Carmen K. M. Li, Wen J. Elhajj, Imad Xi, Ning Dept. of Automation and Computer-Aided Engineering Chinese University of Hong Kong Hong Kong Hong Kong Dept. of Electrical and Computer Engineering Michigan State University United States

Recent developments in the Internet have significantly increased the human capability to obtain information from and reach remote locations. In parallel, the Micro Mechanical and Electronic Systems (MEMS or Microsystems) technology makes it possible for the human to sense and act in a microenvironment. Combined, the Internet and MEMS, will produce a new technology for humans to sense and act in a remote micro-environment. This new technology has potential impact on several fields one of which is biomedical engineering. In this paper, we will present our ongoing development of polyvinylidence fluoride (PVDF) micro-tips as rateof-force sensors for tele-micromanipulation forcefeedback control of micro-mechanical devices over the Internet. Internet based teleoperation between Hong Kong and Michigan State was demonstrated using an event-based control scheme, which ensured stability and synchronization. Control was enhanced by multimedia feedback, which included, in addition to the traditional video, force feedback. The force fed back augmented the limited information supplied by visual feedback. However, the use of force feedback for microenvironments has difficulties, such as proper scaling, that should be carefully studied. We believe this project will eventually make a great impact to the globalisation of MEMS foundries because it will allow global users to micro-assemble and manipulate surface micromachined devices from their laboratories, and hence, reduce the time from design to production significantly. © 2000 IEEE.

关键词： Feedback

来源：评论

学校读者我要写书评

暂无评论

Verification of logic control design using SIPN and model checking: Methods and case study

Verification of logic control design using SIPN and model ch...

引用

作者： Weng, Xiying Litz, Lothar Institute of Process Automation Dept. of Electrical and Computer Engineering University of Kaiserslautern PO 3049 D-67653 Kaiserslautem Germany

This paper deals with the verification of logic control system designs by signal interpreted Petri net (SIPN), which is a special extension of an ordinary Petri net (PN) by input and output signals. Such extensions provide more power for a specification. However, due to the extensions the basic Petri net analysis method is not strong enough to determine the properties. A model checking approach has been applied to the verification of an SIPN design. The requirements to be verified are expressed in temporal logic (TL). Via a model checking algorithm the validity of such requirements can be checked automatically in every possible input sequences. In an error case a sequence of states is calculated, which indicates a trace leading to the violation of the requirements. A case study has shown that this approach can effectively locate errors in the design process. © 2000 American Automatic Control Council.

关键词： Model checking

来源：评论

学校读者我要写书评

暂无评论

Active system for heterogeneous ODBMS using mobile rule codes

引用

East-European Conference on Advances in Databases and Information Systems Held Jointly with International Conference on Database Systems for Advanced Applications, ADBIS-DASFAA 2000

作者： Kim, K.C. Yoo, S.B. Ko, K.W. Cha, S.K. Dept. of Computer Engineering Inha University Inchon Korea Republic of Dept. of Automation Engineering Inha University Inchon Korea Republic of School of Electrical Engineering Seoul National University Seoul Korea Republic of

ISBN: (纸本)3540679774

Throughout many research and development projects for active rule systems, active rules are implemented with different syntax and semantics. It becomes one of the stumbling blocks to apply active database systems especially in networked heterogeneous multidatabase environments. Utilizing the recent development of CORBA and ODMG standards, an active rule system is developed for heterogeneous ODBMS. Active rules represented in an ECA type are managed by a rule base. When events included in application database programs are detected, triggered rules by the events are retrieved from the rule base over network and interpreted dynamically. To ensure fast interpretations, the rules are stored in a bytecode format. Separation of rule-managing function will allow updating rules anytime without modifications in application programs or DBMS. The changes in rules will be reflected instantly in application programs via dynamic interpretation. The active rule system described is applied for integrity maintenance of spatial objects. With experimental results, overheads of byte code interpretation and runtime retrieval of triggered rules through network are discussed. © Springer-Verlag Berlin Heidelberg 2000.

关键词： Semantics

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：