Adaptive fuzzy tracking control of nonlinear time-delay systems with unknown virtual control coefficients

被引：81
|
作者：
Wang, Min [1 ]
Chen, Bing [1 ]
Liu, Kefu [2 ]
Liu, Xiaoping [2 ]
Zhang, Siying [1 ]
机构：
[1] Qingdao Univ, Inst Complex Sci, Qingdao 266071, Peoples R China
[2] Lakehead Univ, Fac Engn, Thunder Bay, ON P7B 5E1, Canada
来源：
INFORMATION SCIENCES | 2008年 / 178卷 / 22期
基金：
中国国家自然科学基金;
关键词：
Nonlinear time-delay systems; Fuzzy control; Adaptive control; Backstepping approach; Uncertainty;
D O I：
10.1016/j.ins.2008.07.008
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
In this paper, a novel adaptive fuzzy control scheme is proposed for a class of uncertain single-input and single-output (SISO) nonlinear time-delay systems with the lower triangular form. Fuzzy logic systems are used to approximate unknown nonlinear functions, then the adaptive fuzzy tracking controller is constructed by combining Lyapunov-Krasovskii functionals and the backstepping approach. The proposed controller guarantees uniform ultimate boundedness of all the signals in the closed-loop system, while the tracking error converges to a small neighborhood of the origin. An advantage of the proposed control scheme lies in that the number of adaptive parameters is not more than the order of the systems under consideration. Finally, simulation studies are given to demonstrate the effectiveness of the proposed design scheme. (c) 2008 Elsevier Inc. All rights reserved.
引用
收藏
页码：4326 / 4340
页数：15
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