检索结果-内蒙古大学图书馆

Analytical Study and Stability Design of a 3-D Fuzzy Logic Controller for Spatially distributed Dynamic systems

IEEE TRANSACTIONS ON FUZZY systemS 2008年第6期16卷 1613-1625页

作者： Zhang, Xian-Xia Li, Han-Xiong Li, Shao-Yuan Shanghai Jiao Tong Univ Inst Automat Shanghai 200240 Peoples R China City Univ Hong Kong Dept Mfg Engn & Engn Management Kowloon Hong Kong Peoples R China Cent S Univ Sch Mech & Elect Engn Changsha 410083 Hunan Peoples R China Shanghai Jiao Tong Univ Inst Automat Shanghai 200240 Peoples R China

A novel 3-D fuzzy logic controller (3-D FLC) was presented to control a class of spatially distributed dynamic systems by Li et al. (IEEE Trans. Fuzzy Syst., vol. 15, no. 3, pp. 470-481, Jun. 2007) by utilizing a 3-D fuzzy set and an inference mechanism with 3-D nature for spatial information processing. In this paper, the analytical mathematical model of the 3-D FLC is derived, and the controller structure is explained with the help of the existing conventional control techniques. The graphic analytical method for the traditional two-term FLC can be used for the analytical model derivation. The derived result shows that the 3-D FLC has a global sliding-mode structure over the spatial domain and explains why the 3-D FLC is able to process spatial information more effectively than its traditional counterpart using a few more sensors. Because of its sliding-mode feature, the Lyapunov stability criterion can be developed easily to analyze and design the 3-D FLC. Finally, a catalytic reactor is presented as an example to demonstrate the effectiveness of the 3-D FLC as compared with other controllers.

关键词： Analytical model distributed parameter system fuzzy logic control (FLC) stability design 3-D fuzzy set

来源：评论

学校读者我要写书评

暂无评论

Approximate controllability of infinite dimensional systems of the n-th order

引用

INTERNATIONAL JOURNAL OF APPLIED MATHEMATICS AND COMPUTER SCIENCE 2008年第2期18卷 199-212页

作者： Respondek, Jerzy Stefan Silesian Tech Univ Inst Comp Sci PL-44100 Gliwice Poland

The objective of the article is to obtain general conditions for several types of controllability at once for an abstract differential equation of arbitrary order, instead of conditions for a fixed order equation. This innovative approach was possible owing to analyzing the n-th order linear system in the Frobenius form which generates a Jordan transition matrix of the Vandermonde form. We extensively used the fact that the knowledge of the inverse of a Jordan transition matrix enables us to directly verify the controllability by Chen's theorem. We used the explicit analytical form of the inverse Vandermonde matrix. This enabled us to obtain more general conditions for different types of controllability for infinite dimensional systems than the conditions existing in the literature so far. The methods introduced can be easily adapted to the analysis of other dynamic properties of the systems considered.

关键词： inverse Vandermonde matrix basic symmetrical polynomials distributed parameter system linear operators controllability

来源：评论

学校读者我要写书评

暂无评论

Infinite dimensional observer for a flexible robot arm with a tip load

引用

ASIAN JOURNAL OF CONTROL 2008年第4期10卷 456-461页

作者： Nguyen, To Duc Egeland, Olav Norwegian Univ Sci & Technol Fac Informat Technol Math & Elect Engn N-7491 Trondheim Norway

This note addresses observer design for a flexible robot arm with a tip load. The robot arm is modeled as an Euler-Bernoulli beam. The beam is clamped to a motor at one end and attached to a force actuator at the other. Based on boundary measurements, an exponentially stable observer is proposed. The existence, uniqueness, and stability of solutions of the observer are proven using semigroup theory. The results are illustrated by simulation.

关键词： distributed parameter system beam equation infinite dimensional observer semigroup

来源：评论

学校读者我要写书评

暂无评论

A simple redesign of adaptive control for distributed parameter systems of hyperbolic type by finite dimensional controllers

A simple redesign of adaptive control for distributed parame...

引用

SICE Annual Conference

作者： Yoshihiko Miyasato Institute for Statistical Mathematics Tokyo Japan

ISBN: (纸本)9784907764296

A simple design method of adaptive control for distributed parameter systems of hyperbolic type, is considered in the present manuscript. It is shown that the finite dimensional adaptive control schemes are constructed without complicated control structures and without time-derivative of output errors, and that semi-global stability of the control system is assured. High-gain observers are introduced to simplify the overall control structures, and nonlinear damping feedback schemes are employed so as to stabilize infinite dimensional modes.

关键词： Adaptive control distributed parameter system Hyperbolic type High-gain observer

来源：评论

学校读者我要写书评

暂无评论

Boundary predictive control of second-order linear modulus-vary distributed parameter systems based on wavelets transformation

Boundary predictive control of second-order linear modulus-v...

引用

2008建模、辨识与控制国际会议

作者： Dou-zhang Ding Electrical Engineering Department, Shanghai Dianji University, Shanghai, 200240 P.R.China Xing-sheng Gu Research Institute of Automation, East China University of Science and Technology, Shanghai, 200237 P.R.China

Introducing the boundary control idea into predictive control of distributed parameter system based on wavelets transformation is a new idea to control of distributed parameter system. Discrete-time boundary predictive control algorithm of second-order linear modulus- vary distributed parameter system based on orthogonal wavelets transformation is proposed in this paper. Second-order linear modulus-vary distributed parameter system in boundary control is approximated in Haar wavelets transformation. So the predictive control propositions of distributed parameter system has been transformed into the predictive control issue of lumped parameter system. The boundary predictive controller is designed for the input returning to the boundary predictive control rule of the original system. Simulation studies of the proposed algorithm, as well as the system robustness under uncertainty such as the parameters perturbations, and a disturb occurring to the system output are showed. The results have verified the control effectiveness of the proposed algorithm.

关键词： distributed parameter system boundary predictive control wavelets transformation system approximation.

来源：评论

学校读者我要写书评

暂无评论

On the combination of differential flatness and backstepping for the tracking control of a diffusion-convection-reaction system

引用

ELEKTROTECHNIK UND INFORMATIONSTECHNIK 2008年第1-2期125卷 2-11页

作者： Meurer, T. Kugi, A. Tech Univ Wien Inst Automatisierungs & Regelungstech Gusshausstr 27-29-E376 A-1040 Vienna Austria

The combination of flatness-based feedforward control and backstepping state feedback control is considered for the solution of a tracking control problem for a boundary controlled diffusion-convection-reaction system with cubic nonlinearity. The control task thereby concerns the realization of a finite-time transition from an initial operating profile to a final operating profile along a desired output trajectory. Besides the theoretical analysis, the tracking performance of the closed-loop distributed-parameter system is evaluated in simulation studies, which confirm the applicability of the proposed approach.

关键词： differential flatness backstepping tracking control trajectory planning feedforward control stabilization distributed parameter system diffusion-convection-reaction system

来源：评论

学校读者我要写书评

暂无评论

Model predictive control of an industrial pyrolysis gasoline hydrogenation reactor

引用

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY 2008年第2期14卷 175-181页

作者： Arpomwichanop, Amomchai Kittisupakm, Paisan Patcharavorachot, Yaneepom Mujtaba, Iqbal A. Chulalongkorn Univ Fac Engn Dept Chem Engn Bangkok 10330 Thailand Univ Bradford Sch Engn Design & Technol Bradford BD7 1DP W Yorkshire England

This study focuses on the implementation of a nonlinear model predictive control (MPC) algorithm for controlling an industrial fixed-bed reactor where hydrogenations of raw pyrolysis gasoline occur. An orthogonal collocation method is employed to approximate the original reactor model consisting of a set of partial differential equations. The approximate model obtained is used in the synthesis of a MPC controller to control the temperature rising across a catalyst bed within the reactor. In the MPC algorithm, a sequential optimization approach is used to solve an open-loop optimal control problem. Feedback information is incorporated in the MPC to compensate for modeling error and unmeasured disturbances. The control studies are demonstrated in cases of set point tracking and disturbance rejection. (C) 2007 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.

关键词： model predictive control fixed-bed reactor distributed parameter system reactor control simulation

来源：评论

学校读者我要写书评

暂无评论

How violent are fast controls, III

引用

JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS 2008年第1期339卷 461-468页

作者： Seidman, Thomas I. Univ Maryland Baltimore Cty Dept Math & Stat Baltimore MD 21250 USA

For (coupled systems of) partial differential equations for which nullcontrol is possible in arbitrarily short time, the 'standard' blowup rate for the control cost is exponential in 1/T. It is shown how to derive this rate for a variety of systems, including the thermoelastic system with control restricted to a small patch in the domain and to a single component (thermal, displacement, or velocity). (c) 2007 Elsevier Inc. All rights reserved.

关键词： distributed parameter system optimal control nullcontrol blowup rate energy functional partial differential equation thermoelastic

来源：评论

学校读者我要写书评

暂无评论

Analytical Model of Three-dimensional Fuzzy Logic Controller for Spatio-temporal Processes

Analytical Model of Three-dimensional Fuzzy Logic Controller...

引用

IEEE International Conference on system, Man, and Cybernetic

作者： Li, Han-Xiong Zhang, Xianxia Li, Shaoyuan City Univ Hong Kong Dept MEEM Hong Kong Hong Kong Peoples R China Shanghai Univ Sch Mechatron & Automat Shanghai 200072 Peoples R China Shanghai Jiao Tong Univ Inst Automat Shanghai 200240 Peoples R China

ISBN: (纸本)9781424423835

A novel three-dimensional fuzzy logic controller (3-D FLC) is presented for controlling the spatio-temporal systems, with the help of three-dimensional (3-D) fuzzy sets and inference logic. The analytical model of the 3-D FLC is derived to disclose its working principle and guide the control design. The derived model show that the 3-D FIX has a global sliding mode structure over the spatial domain, which explains why the 3-D FLC is able to process spatial information more effectively with a few more sensors. Based on its sliding mode feature, the 3-D fuzzy logic control system can be analyzed and designed in the sense of Lyapunov stability. Finally, a catalytic reactor is presented as an example to validate the effectiveness of 3-D FLC.

关键词： fuzzy logic controller distributed parameter system three-dimensional fuzzy set

来源：评论

学校读者我要写书评

暂无评论

A LS-SVM Modeling Approach for Nonlinear distributed parameter Processes

A LS-SVM Modeling Approach for Nonlinear Distributed Paramet...

引用

7th World Congress on Intelligent Control and Automation

作者： Qi, Chenkun Li, Han-Xiong City Univ Hong Kong Dept Mfg Eng & Eng Management Hong Kong Hong Kong Peoples R China

ISBN: (纸本)9781424421138

The distributed parameter system modeling from the input and output data is investigated. The spatio-temporal output of the system is measured at a finite number of spatial locations, while the input is assumed to be a finite-dimensional temporal variable. Firstly, Karhunen-Loeve (KL) decomposition is used for the time/space separation and the dimension reduction. Subsequently the spatio-temporal output is expanded in terms of a low dimensional Karhunen-Loeve spatial basis functions. Finally its temporal dynamic model is learned from the temporal coefficients by using least squares support vector machines (LS-SVM). The simulations are presented to show the effectiveness of this spatio-temporal modeling method.

关键词： distributed parameter system spatio-temporal modeling Karhunen-Loeve decomposition least squares support vector machines

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：