检索结果-南通市图书馆

adaptive fuzzy control for uncertain nonlinear systems

在线全文

学校读者我要写书评

暂无评论

Journal of control and Decision 2019年第1期6卷 30-40页

作者： S.C.Tong College of Science Liaoning University of TechnologyJinzhouLiaoningPeople’s Republic of China College of Science Liaoning University of TechnologyJinzhouLiaoning 121001People’s Republic of China

In this paper,a survey of adaptive fuzzy for uncertain nonlinear systems is *** first part introduces adaptive fuzzy control emergence and some typical control methods for uncertain nonlinear systems with matching conditions(single-input singleoutput systems,multi-input multi-output systems).The last part presents the adaptive fuzzy state feedback and output-feedback control methods for uncertain nonlinear systems with non-matching conditions based on the backstepping technique,including strictfeedback systems,pure-feedback systems and non-strict-feedback systems.

关键词： adaptive fuzzy control backstepping technique uncertain nonlinear systems feedback control

adaptive fuzzy control for a Class of Nonlinear Systems with Input Constraint and Unknown control Direction 25th

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Adaptive Fuzzy Control for a Class of Nonlinear Systems with...

Indirect adaptive fuzzy control for a class of nonlinear discrete-time systems

第25届中国控制与决策会议

作者： Shi Wuxi Wang Hongquan Li Furong Wei Xiangyu School of Electrical Engineering and Automation Tianjin Polytechnic University

ISBN: (纸本)9781467355339

An indirect adaptive fuzzy control scheme is developed for a class of nonlinear systems with input constraint and unknown control direction. In this scheme, the fuzzy systems are used to proximate unknown nonlinear functions, a modified control design framework is presented for preventing the presence of input constraint from destroying the learning capabilities of the fuzzy systems, and the dynamic robustness term is used to compensate the approximation errors. The proposed design scheme guarantees that all the signals in the resulting closed-loop system are bounded, and the tracking error converges to the small neighborhood of the origin. Simulation results indicate the effectiveness of this scheme.

关键词： Nonlinear Systems adaptive fuzzy control Input Constraint

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Journal of Systems Engineering and Electronics 2008年第6期19卷 1203-1207页

作者： Shi Wuxi School of Computer Technology and Automation Tianjin Polytechnic Univ. Tianjin 300160 P. R. China

An indirect adaptive fuzzy control scheme is developed for a class of nonlinear discrete-time systems. In this method, two fuzzy logic systems are used to approximate the unknown functions, and the parameters of membership functions in fuzzy logic systems are adjusted according to adaptive laws for the purpose of controlling the plant to track a reference trajectory. It is proved that the scheme can not only guarantee the boundedness of the input and output of the closed-loop system, but also make the tracking error converge to a small neighborhood of the origin. Simulation results indicate the effectiveness of this scheme.

关键词： nonlinear discrete-time systems adaptive fuzzy control stability analysis.

Roll Subsectional Cooling adaptive fuzzy control Based on fuzzy Model Inversion

在线全文

学校读者我要写书评

暂无评论

Journal of Iron and Steel Research International 2010年第4期17卷 39-44页

作者： SHAN Xiu-ying LIU Hong-min JIA Chun-yu Engineering Research Center of Rolling Equipment and Complete Technology of Ministry of Education State Key Laboratory of Metastable Materials Science and Technology Yanshan University Qinhuangdao 066004 Hebei China

Flatness is an important equality indicator of strip rolling and roll subsectional cooling is an important method for flatness control, especially for high order flatness component control. It is very hard to build the mathematic model of roll subsectional cooling because of its characteristics of nonlinearity, hysteresis quality and strong coupling, etc. In order to improve the control effect of roll subsectional cooling control model, the roll subsectional cooling adaptive fuzzy control model based on fuzzy model inversion is built according to the separation principle of fuzzy form on the basis of the conventional fuzzy control model, where the parameters of the fuzzy controller can be dynamically regulated according to the change of rolling conditions. Simulation experiment results of the model indicate that the proposed roll subsectional cooling adaptive fuzzy control model based on fuzzy model inversion has high control precision and rapid response speed with strong self-learning and anti-interference capacity and a new method is provided for high precision flatness control.

关键词： fuzzy identification subsectional cooling adaptive fuzzy control flatness control

Variable universe adaptive fuzzy control on the quadruple inverted pendulum

在线全文

学校读者我要写书评

暂无评论

Science China(Technological Sciences) 2002年第2期45卷 213-224页

作者：李洪兴苗志宏王家银 Department of Mathematics Beijing Normal UniversityBeijing 100875China Department of Mathematics Sichuan Normal UniversityChengdu 610066China Department of Automatic control Tsinghua UniversityBeijing 100084China

This paper focuses on the control problem of the quadruple inverted pendulum by variable universe adaptive fuzzy ***,the mathematical model on the quadruple inverted pendulum is described and its controllability is ***,an efficient controller on the quadruple inverted pendulum is designed by using variable universe adaptive fuzzy control *** the simulation of the quadruple inverted pendulum is shown in ***,the experimental results on the hardware systems,*** object systems,on a single inverted pendulum,a double inverted pendulum and a triple inverted pendulum are briefly introduced.

关键词： quadruple inverted pendulum variable universe adaptive fuzzy control

An adaptive fuzzy control Model for Multi-Joint Manipulators

在线全文

学校读者我要写书评

暂无评论

Computer Systems Science & Engineering 2022年第3期40卷 1043-1057页

作者： Yanzan Han Huawen Zhang Zengfang Shi Shuang Liang Department of Mechanical and Electrical Henan Polytechnic InstituteNanyang473000China University of Florence Firenze50041Italy

Multi-joint manipulator systems are subject to nonlinear influences such as frictional characteristics,random disturbances and load *** account for uncertain disturbances in the operation of manipulators,we propose an adaptive manipulator control method based on a multi-joint fuzzy system,in which the upper bound information of the fuzzy system is constant and the state variables of the manipulator control system are *** control algorithm of the system is a MIMO(multi-input-multi-output)fuzzy system that can approximate system error by using a robust adaptive control law to eliminate the shadow caused by approximation *** can ensure the stability of complex manipulator control systems and reduce the number of fuzzy rules *** of experimental and simulation data shows that the controller designed using this algorithm has highly-precise trajectory-tracking control and can control robotic systems with complex characteristics of non-linearity,coupling and ***,the proposed algorithm has good practical application prospects and promotes the development of complex control systems.

关键词： Multi-joint manipulator robust control law adaptive fuzzy control nonlinear MIMO system

Observer-based adaptive fuzzy control for a Class of Nonlinear Time-delay Systems

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Automation and computing 2013年第4期10卷 275-280页

作者： Hassan A. Yousef Mohamed Hamdy Department of Electrical and Computer Engineering College of Engineering Sultan Qaboos University Department of Industrial Electronics and control Engineering Faculty of Electronic Engineering Menofia University

An observer-based adaptive fuzzy control is presented for a class of nonlinear systems with unknown time delays. The state observer is first designed, and then the controller is designed via the adaptive fuzzy control method based on the observed states. Both the designed observer and controller are independent of time delays. Using an appropriate Lyapunov-Krasovskii functional, the uncertainty of the unknown time delay is compensated, and then the fuzzy logic system in Mamdani type is utilized to approximate the unknown nonlinear functions. Based on the Lyapunov stability theory, the constructed observer-based controller and the closed-loop system are proved to be asymptotically stable. The designed control law is independent of the time delays and has a simple form with only one adaptive parameter vector, which is to be updated on-line. Simulation results are presented to demonstrate the effectiveness of the proposed approach.

关键词： Observer adaptive fuzzy control nonlinear systems time delay stability.

Cooperative adaptive fuzzy control for a class of uncertain non-linear multi-agent systems with time delays

在线全文

学校读者我要写书评

暂无评论

Journal of control and Decision 2017年第3期4卷 131-152页

作者： Li-Bing Wu Xi-Qin He Da-Qing Zhang Department of Mathematics School of ScienceUniversity of Science and Technology LiaoningAnshanP.R.China

This paper studies the robust adaptive fuzzy cooperative tracking control problem for a class of uncertain non-linear multi-agent systems with multiple time delays and dead-zone ***,based on the implicit function theorem,the non-affine form of the multi-agent system can be converted into the corresponding affine ***,using the local state information of neighbouring agents,a novel adaptive fuzzy cooperative tracking controller with the corresponding parameter-updated laws is designed based on undirected communication ***,it is shown that all the closed-loop signals are bounded,and all follower nodes asymptotically tracking to the leader can be achieved in the presence of time-delayed perturbations and unknown dead-zone ***,simulation results are given to demonstrate the effectiveness of the proposed adaptive control scheme.

关键词： adaptive fuzzy control cooperative control non-linear time-delayed systems dead-zone inputs

Improved adaptive fuzzy control for MIMO nonlinear time-delay systems

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

控制理论与应用（英文版） 2011年第2期9卷 278-282页

作者： Du, Zhenbin Qu, Zifang School of Computer Science and Technology Yantai University Yantai Shandong 264005 China College of Mathematics and Information Science Shandong Institute of Business and Technology Yantai Shandong 264005 China

This paper presents an improved observer-based indirect adaptive fuzzy control scheme for multiinput-multioutput (MIMO) nonlinear time-delay *** control scheme synthesizes adaptive fuzzy control with adaptive fuzzy *** observer is designed to observe the system state,and an identifier is developed to identify the unknown parts of the *** update laws for parameters utilize two types of errors in the adaptive time-delay fuzzy logic systems,the observation error and the identification *** analysis proves the superiority of the update laws in terms of faster and improved tracking and parameter *** results of two-link manipulator demonstrate the effectiveness of the improved control scheme.

关键词： MIMO Time-delay Nonlinear systems adaptive fuzzy control Observer Identification