检索结果-内蒙古大学图书馆

Power Industry Computer Application Conference (PICA)

作者： K.H. Abdul-Rahman S.M. Shahidehpour M. Aganagic S. Mokhtari Siemens Empros Power Systems Control USA Department of Electrical and Computer Engineering Illinois Institute of Technology Chicago IL USA Empros Power Systems Control Siemens Energy and Automation Inc. Brooklyn MN USA

This paper presents an efficient approach to short term power system resource scheduling based on the augmented Lagrangian relaxation method. The problem is divided into two stages, the commitment stage and the constrained economic dispatch stage. The proposed mathematical model incorporates optimal power flow (OPF) constraints in the unit commitment stage. By OPF constrains, the authors refer to the relevant active power constraints that are incorporated in the constrained economic dispatch stage (i.e. transmission capacity constraints, fuel and various regulated emission requirements). The inclusion of OPF constraints in the commitment stage will improve the feasibility of the constrained economic dispatch solution. Other unit commitment constraints such as spinning and operating reserve requirements, power balance as well as other relevant local constraints (i.e. unit ramping rates, upper and lower generation limits, minimum up and down times) are taken into account in the proposed model. As a larger number of constraints are dealt with, a more rigorous method is introduced for updating Lagrange multipliers to improve the solution convergence. A software package which addresses energy management systems requirements is developed and tested.

关键词： Power generation economics Fuel economy Power system modeling Lagrangian functions Relaxation methods Power system economics Mathematical model Load flow Spinning Power generation

来源：评论

学校读者我要写书评

暂无评论

A Deadlock Avoidance Policy for a Class of FMS

引用

IFAC Proceedings Volumes 1995年第24期28卷 281-286页

作者： A. Gurel O.C. Pastravanu F.L. Lewis Department of Electrical and Electronic Engineering Eastern Mediterranean University Famagusta North Cyprus Mersin 10 Turkey Department of Automatic Control and Industrial Informatics Technical University of Iasi 6600 Iasi Romania Automation and Robotics Research Institute The University of Texas at Arlington Forth Worth Texas 76118 USA

A real-time deadlock avoidance policy is proposed for a subclass of FMS. To model the flow of parts in the FMS, a new formulation, which separates the controller from the workcell dynamics, is adapted. The controller is rule-based, and is represented as a set of matrix equations over ( min , +) algebra. The proposed scheme is founded on a Petri net-based analysis of deadlock situations in FMS. It handles the problem of deadlock on an on-line basis, as part of the more general issue of conflict resolution.

关键词： Discrete-event manufacturing systems flexible manufacturing systems deadlock avoidance rule-based controller Petri-nets

来源：评论

学校读者我要写书评

暂无评论

Steady‐state security evaluation of electrical power systems by means of artificial neural network

引用

European Transactions on electrical Power 1995年第2期5卷 91-97页

作者： Chiodo, E. Menniti, D. Testa, A. Picardi, C. Elio Chiodo (1959) received the degree in Electronics Engineering in 1985 and the Ph.D. degree in Computational Statistics both from the University of Naplefltaly. He is a Researcher at the Department of Electrical Engineering of the University of Naples and a member of the Italian Statistical Society. His areas of interest include probabilistic methods applied to electric power systems analysis. (University of Naples Fedrrico 11. Electrical Engineering Dept.via Claudio 21 1-80125 Naplefltaly T +3981/7683226 Fax+3981/2396897) Daniele Menniti (1958) received the degree in Electrical Engineering from the University of Calabria. Cosenzataly and the Ph.D. degree in Electrical Engineering from the University of NapleslItaly in 1984 and 1989 respectively. He is a researcher at the Electronic. Computer and Systems Science Department of the University of Calabria. Italy. Hiscurrent research interests concern electric power system analysis real-time control and automation. (University of Calabria Electronic Computer and Systems Science Dep. Arcavacataji Rende (CS). 1-87036 CosenzdItaly T +39984/494707. Fax +39984/4947 13) Alfredo Testa (1950) received the degree in Electrical Engineering from the University of Naples/Italy in 1975. He is an Associate Professor in Electrical Power Systems at the Department of Electrical Engineering of the University of Naples. He is engaged in researches on electrical power systems reliability and harmonic analysis. (University of Naples Federico 11. Electrical Engineering Dep. via Claudio '2 1 1-80 I25 NapleslItaly T + 39 8 I/7 68 3'2 11. Fax+3981/2396897) Ciro Picardi (1949) received the degree in Electronics Engineering from the University of Naples/Italy in 1975. He is currently Associate Professor in Process Control at the Department of Electronic Computer and System Science of the University of Calabria. Italy. His current research interests are in the area of electrical drives robotics neural networks and fuzzy control. (University of Calabria Electronic. Compu

An artificial‐neural‐network (ANN) application for steady‐state security evaluation of electrical power systems is presented. Such application is based upon a combined use of a multilayer back‐propagation neural network and of an opportune electrical system model, previously proposed by some of the authors. In the paper, the definition of steady‐state security and the problems arising from its on‐line evaluation are briefly recalled. Then, the ANN utilized is described with particular reference to the solutions adopted by the authors. Afterwards, some remarks on the system model utilized are reported. Finally, numerical applications on the AEP‐14 bus system are presented and the results obtained with different ANN configurations are analyzed. Copyright © 1995 John Wiley & Sons, Ltd.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Decentralized Variable Structure control of Complex Systems

引用

IFAC Proceedings Volumes 1994年第11期27卷 227-232页

作者： V. Veselý D. Kalaš Slovak Technical University Department of Automatic Control Systems Faculty of Electrical Engineering Bratislava Slovakia Slovak Technical University Department of Control and Automation Faculty of Electrical Engineering Bratislava Slovakia

The paper considers the problem of stabilizing large scale dynamic systems (LSS) via decentralized controllers based on Variable Structure Systems (VSS) and using the principle of dominant subsystems. The principle and applications for LSS are described and simulation test results on a two- machines power system with nonlinear model are presented.

关键词： Decentralized control diagonal dominance variable structure systems large scale systems

来源：评论

学校读者我要写书评

暂无评论

Permissive control of Boolean condition/event systems: Synthesis and limits

Permissive control of Boolean condition/event systems: Synth...

引用

IEEE International Symposium on Intelligent control (ISIC)

作者： S. Kowalewski H.-M. Hanisch Process Control Group (AST) Chemical Engineering Department University of Dortmund Dortmund Germany Automation Institute (INFAUT) Electrical Engineering Department Technical University Magdeburg Magdeburg Germany

This paper presents a synthesis method for logic controllers based on a discrete state model of the plant and a formal specification of the desired behavior in form of forbidden state sequences. We use Boolean condition/event systems as the basic modeling paradigm. The synthesis algorithm is specified with the help of Boolean differential calculus operators and realized using the Boolean analysis software XBOOLE. The resulting controller is permissive in the sense that it does not force state transitions in the plant. The approach is applied to a simple hatch process example which exhibits limits of a purely permissive control concept.< >

关键词： control system synthesis Force control control systems Programmable control Automatic control Logic Calculus automation process control Chemical engineering

来源：评论

学校读者我要写书评

暂无评论

Saturating Pole Assignment controller Construction and Geometrical Interpretation in the Phase Plane

引用

IFAC Proceedings Volumes 1994年第11期27卷 111-116页

作者： M. Huba Slovak Technical University Department of Automation and Control Faculty of Electrical Engineering and Information Technology SK-812 19 Bratislava

This paper deals with the pole assignment controller design under consideration of the control signal saturation. The controller synthesis developed for the double integrator plant is based on the decomposition of the 2nd order dynamics into two particular 1st order movements witch enables, together with the newly introduced geometrical interpretation of closed loop poles, an easy handling of saturation effects and yields a simlpe explicite controller fully respecting the given saturation limits. So, the specification of the closed loop poles can be made quite indipendently from the saturation effect, i.e. they only have to respect different parasitic effects like quantization and measurement noice, neclected dynamics, etc. It gives to the designer a new “degree of freedom” in comparing with the “linear” pole assignment controllers, where this choice has to take into account also the allowed control signal amplitudes.

关键词： Pole assignment digital control saturation minimum time control

来源：评论

学校读者我要写书评

暂无评论

Parametrically Invariant Servosystems of Robots

引用

IFAC Proceedings Volumes 1994年第11期27卷 65-71页

作者： V. Kalaš M. Molnár Slovok Technical Univenity Department of Control and Automation of Electrical Engineering Ilkovičova 3 812 19 Bratislava. Slovak Republic

One possible solution of the problem of parametrical and signal invariancy are the cascade control system structures with control loops with invariancy controllers. It is very difficult to measure the disturbances for the changes of moment of inertia, load torque and other disturbances. In this paper there is proposed the method, which allows to obtain the information about the global disturbance and allows it’s processing in the invariancy controller. Thus the system is forced to behave as given by the reference response and thus the asymptotic stability of the system can be obtained.

关键词： Industrial robots Servosystems d.c. motors Cascade control Current control Velocity control Position control Invariance control Robust control Acceleration measurement

来源：评论

学校读者我要写书评

暂无评论

Experimental verification of bilateral force/position control schemes using the communication network analogy

Experimental verification of bilateral force/position contro...

引用

IEEE Conference on Decision and control

作者： A. Eusebi A.C. van der Ham Robotics and Automation Laboratory DEIS Department of Electrical Engineering University of Bologna Bologna Italy Control Laboratory Department of Electrical Engineering Delft University of Technnology Delft Netherlands

Investigations in the field of telemanipulation have resulted in effective and theoretically elegant bilateral force/position control algorithms based on the communication network analogy. Nevertheless, implementation of these algorithms can give instability problems mainly due to the time-delay and temporal drift of some variables of the tele-operator. In this paper, the nature of these problems is identified and solutions of implementation problems and compensation of undesired effects are presented.< >

关键词： Force control Position control Communication system control Stability Optimal control Communication networks Robotics and automation Laboratories Humans Master-slave

来源：评论

学校读者我要写书评

暂无评论

Stability Analysis of Fuzzy controller and Implications for Design

引用

IFAC Proceedings Volumes 1994年第3期27卷 73-78页

作者： L. Jurišica M. Sedláček Slovak Technical University Faculty of Electrical Engineering Department of Automation and Control 3 Ilkovičova St. Bratislava 812 19 Slovak Republic

Some techniques for the stability analysis of the control system with fuzzy logic controller are presented. The techniques are based on classical methods and they require the fuzzy controller, satisfying the sector condition. The structure of fuzzy controller, satisfying this requirement is proposed. For this controller, the analytical dependence between the stability margin and controller parameters is developed and the technique for tuning the controller parameters is also developed. The analogy with switching curve is used to tune the remaining degrees of freedom of the controller. The method is documented on a d.c. velocity servosystem.

关键词： Fuzzy control stability criterion parameter tuning d.c.motor uncertain system

来源：评论

学校读者我要写书评

暂无评论

Stability Based Design of Fuzzy Logic controller

引用

IFAC Proceedings Volumes 1994年第11期27卷 233-238页

作者： M. Sedláček Slovak Technical University Faculty of Electrical Engineering Department of Automation and Control 3 Ilkovičova St. Bratislava 812 19 Slovak Republic

There are presented some methods for the stability analysis of the control system with fuzzy logic controller. The methods are based on classical methods and they require fuzzy logic controller, satisfying the sector condition. The necessary structure of fuzzy controller, satisfying this requirement is proposed. For this controller, the method for tuning the controller parameters is developed. The method is based on stability analysis and guarantees the stability of the system. The analogy with switching curve is used to tune the remaining degrees of freedom of the controller. The method is documented on a d.c. velocity servosystem.

关键词： Fuzzy control Stability Tuning d.c. motor Uncertain system

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：