检索结果-内蒙古大学图书馆

IEEE Conference on Decision and control

作者： R.H. Middleton J.H. Braslavsky Department of Electrical and Computer Engineering University of Newcastle Australia Industrial Automation & Control Universidad Nacional de Quilmes Argentina

ISBN: (纸本)0780366387

Two seemingly independent streams of control systems research have examined logarithmic sensitivity integrals and limiting linear quadratic optimal control problems. These apparently diverse problems yield some results with an identical right hand side. The main contribution of the paper is to directly explain the commonality between these streams. This explanation involves the use of Parseval's theorem to, derive tight inequality bounds between frequency domain logarithmic sensitivity integrals, and the achievable quadratic performance of a linear time invariant system.

关键词： Optimal control control systems Integral equations Transfer functions Error correction Linear feedback control systems Cost function State feedback Velocity control Open loop systems

来源：评论

学校读者我要写书评

暂无评论

Robust sampled-data control for vehicle steering systems

Robust sampled-data control for vehicle steering systems

引用

IEEE Conference on control Technology and Applications (CCTA)

作者： Li-Sheng Hu Yong-Yan Cao Hui-He Shao Department of Automation Shanghai Jiaotong University Shanghai China Department of Measurement and Control Faculty of Electrical Engineering Duisburg University Duisburg Germany

In industrial control, computer control is widely used, which makes the closed-loop system be a sampled-data one containing continuous time and discrete time signals. In contrast to the traditional approximation methods, sampled-data synthesis is a direct digital controller design procedure without approximation. Sampled-data control which is capable of stabilizing general nonlinear systems with the intersample behavior taken into account are of great current interest. In the paper robust sampled-data control for a class of nonlinear parametric uncertain systems with constraints on the output imposed by time-domain performances is proposed. Based on the result of robust asymptotic stability of sampled-data systems with constraints on the state, robust sampled-data control for a class of uncertain nonlinear systems with constraints on the output is developed. The problem is formulated for vehicle steering control with constraint on the side slip angle of body. The result is described by some matrix inequalities which could be solved by a proposed iterative algorithm based on the linear matrix inequality technique. Finally, a numerical example is presented to show the result.

关键词： Robust control control systems Vehicles Steering systems Nonlinear control systems Nonlinear systems Robust stability Linear matrix inequalities Industrial control Approximation methods

来源：评论

学校读者我要写书评

暂无评论

Application of a neural predictive controller in boost converter input current control

Application of a neural predictive controller in boost conve...

引用

IEEE International Symposium on Intelligent control (ISIC)

作者： I. Petrovic M. Baric A. Magzan N. Peric Fac. of Electr. Eng. Zagreb Univ. Croatia Faculty of Electrical Engineering and Computing Department of Control and Computer Engineering in Automation University of Zagreb Zagreb Croatia College of Electrical Engineering Polytechnics College of Zagreb Zagreb Croatia

The application of a nonlinear predictive controller in the cascade control structure of a boost converter is investigated. The neuro-predictive controller is realized as a nonlinear optimizer, using the Levenberg-Marquardt unconstrained optimization procedure. For the prediction of future process responses, two MLP neural networks are used. One network is used for modeling the converter dynamics and the other for online estimation of the converter's input voltage. This structure ensures good system performance in all operating regions and inherent compensation of ripples in the converter's input current caused by variations of the input voltage. The advantages of the proposed control structure are demonstrated through experimental comparison with a linear GPC with manually adjusted feedforward compensator.

关键词： Current control Voltage control control systems Automatic control Pulse width modulation Switches Rail transportation Current measurement Electric current control Application software

来源：评论

学校读者我要写书评

暂无评论

Adaptive Fuzzy Ship Autopilot for Track-Keeping

引用

IFAC Proceedings Volumes 2000年第21期33卷 129-134页

作者： Jasmin Velagic Zoran Vukic Edin Omerdic University of Sarajevo Faculty of Electrical Engineering Skenderija 70 BH-71000 Sarajevo Bosnia and Herzegovina fax : (+387 71) 654 972 University of Zagreb Faculty of Electrical Engineering and Computing Department of Control and Computer Engineering in Automation Unska 3 HR-10000 Zagreb Croatia fax : (+385 1) 612 98 09 University of Tuzla Faculty of Electrical and Mechanical Engineering Franjevacka 2 BH-75000 Tuzla Bosnia and Herzegovina

We develop in this paper an adaptive fuzzy gain autopilot for ship track-keeping. This autopilot is composed of Sugeno fuzzy type autopilot in an ordinary feedback loop and adjustable scaling factors mechanism in an additional feedback loop. The adjustment mechanism represents a fuzzy controller that changes scaling factors of the base fuzzy autopilot. The control system for the track-keeping is completely described. For the track-keeping problem, the maneuver of way-point turning and ship guiding through a complex path (trajectory) are presented. The influence of sea current and wave disturbances on track-keeping performance was also considered. We first present simulation results obtained by the Sugeno fuzzy type autopilot. Then, we compare those results with ones obtained by an adaptive fuzzy autopilot.

关键词： Adaptive fuzzy control track-keeping fuzzy gain concept disturbance rejection ship control

来源：评论

学校读者我要写书评

暂无评论

Adaptive control on manifolds with RBF neural networks

Adaptive control on manifolds with RBF neural networks

引用

IEEE Conference on Decision and control

作者： V.A. Terekhov I.Yu. Tyukin D.V. Prokhorov Department of Automatic and Control Process Saint Petersburg State Electrical Engineering University Russia Ford Research Laboratory Ford Motor Company Limited Dearborn MI USA

ISBN: (纸本)0780366387

We propose a new method of adaptive control on manifolds for nonlinear plants in the full-state feedback case using radial basis function (RBF) neural networks. We introduce a procedure for synthesis of adaptation algorithms based on associated performance criteria. We analyze applicability of the algorithms developed for a quadratic performance criterion.

关键词： Adaptive control Neural networks control theory Network synthesis control systems control system synthesis State feedback Algorithm design and analysis State-space methods Equations

来源：评论

学校读者我要写书评

暂无评论

Polynomial Approach to Stable Predictive control

引用

IFAC Proceedings Volumes 2000年第14期33卷 687-692页

作者： M. Fikar H. Unbehauen J. Mikleš Control Engineering Laboratory Faculty of Electrical Engineering Ruhr-University Bochum D44780 Universitätsstr. 150 Germany Tel: ++49/234 32 28071 Fax: ++49/234 32 14101 Department of Process Control CHTF STU Radlinského 9 SK-812 37 Bratislava Slovakia

In this article a general framework for stable predictive controllers is derived. The basis for the unification are closed-loop poles. It is shown that many existing stabilising predictive controllers can be obtained for particular settings. Several kinds of the quadratic cost function can be minimised. It is shown that for a special cost function it is possible to construct a predictive controller with the following features: (i) it produces the same control actions as a given known controller in the unconstrained case, (ii) it introduces a new degrees of freedom that can be used for constraints handling.

关键词： Predictive control stability algebraic theory

来源：评论

学校读者我要写书评

暂无评论

Stability issues of finite precision state estimate feedback controller realizations for discrete time systems

Stability issues of finite precision state estimate feedback...

引用

American control Conference (ACC)

作者： Jun Wu Sheng Chen Gang Li R.H. Istepanian Jian Chu J.F. Whidborne National Laboratory of Industrial Control Tech Institute of Advanced Process Control University of Zhejiang Hangzhou China Department of Electronics and Computer Science University of Southampton Southampton UK The school of EEE Nanyang Technological University Singapore Department of Electrical and Computer Engineering Ryerson Polytechnic University Toronto ONT Canada National Laboratory of Industrial Control Tech. Institute of Advanced Process Control University of Zhejiang Hangzhou China Department of Mechanical Engineering King''s College London UK

This paper present a new effective algorithm for the optimal realization of state estimate feedback controller structures for discrete time systems subject to finite-word-length constraints. The problem is formulated as a nonlinear programming to provide an easy and efficient optimization tool to solve such a complex problem. Simulation results of the optimum realizations of state estimate feedback controller structures are presented to illustrate the effectiveness of the proposed strategy.

关键词： Stability State estimation Adaptive control control systems Digital control Industrial control process control Educational institutions Discrete time systems Signal design

来源：评论

学校读者我要写书评

暂无评论

Sparse realizations of optimal finite-precision teleoperation controller structures

Sparse realizations of optimal finite-precision teleoperatio...

引用

American control Conference (ACC)

作者： R.H. Istepanian J. Wu S. Chen Department of Electrical and Computer Engineering Ryerson Polytechnic University Toronto ONT Canada Institute of Industrial Process Control University of Zhejiang Hangzhou China Department of Electronics and Computer Science University of Southampton Southampton UK

We study the finite word length (FWL) implementation of digital controller structures with sparseness consideration. A FWL stability measure is derived, taking into account the number of trivial elements in a controller realization. The controller realization that maximizes a lower bound of this measure is first obtained, and a stepwise algorithm is then applied to make the realization sparse. A test case involving a dual wrist assembly shows that the proposed design procedure yields a computationally efficient controller realization with good FWL closed-loop stability performance.

关键词： Optimal control control systems Digital control Wrist Computational efficiency Robust stability Iterative algorithms Assembly systems Computer industry Industrial control

来源：评论

学校读者我要写书评

暂无评论

Robustness of a Few control Methods Used in Robotics

引用

IFAC Proceedings Volumes 2000年第13期33卷 601-606页

作者： Vesna Krajčí Ladislav Jurišica Department of Automation and Control Faculty of Electrical Engineering and Information Technology Slovak University of Technology Ilkovičova 3 812 19 Bratislava Slovakia Phone: 00421 7 60 291 599 Phone: 00421 760291351 Fax: 00421 765429521

The paper deals with proving of robustness for a few simple control methods often used in robotics. These methods are: two variants of variable-structure control, a control method with an auxiliary controller developed by Hsia (1989) and a fuzzy control. Robustness of the proposed continuous-path control methods is evaluated in the case of planar articulated robot moving along two common used trajectories: straight-line and circular. Computer simulations performed with load change, added external disturbance and white measurement noise proved satisfying robustness of all presented robot control methods.

关键词： robotics robustness variable-structure control robust control fuzzy control robot arm computer simulation

来源：评论

学校读者我要写书评

暂无评论

Improving Disturbance Rejection Properties of the MMO Method

引用

IFAC Proceedings Volumes 2000年第13期33卷 83-87页

作者： Damir Vrančić Stanko Strmčnik Mikulas Huba J. Stefan Institute Jamova 39 SI-1001 Ljubljana Slovenia FAX: + 386-61-219-385 Department of Automation and Control Faculty of Electrical Engineering and Information Technology Slovak Technical University SK-812 19 Bratislava Slovakia

The PI controllers provide very good trade-off between robustness and performance. However, in certain applications the control performance of the PI controller is not sufficient. In order to increase control performance, more complicated controller structure has to be used. In this paper it has been shown that disturbance rejection properties can be significantly improved by simply adding the first-order filter within the classical PI controller structure.

关键词： PID control Magnitude Optimum Frequency Response controller Tuning Disturbance Rejection

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：