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中国科学院大学学报 ›› 2006, Vol. 23 ›› Issue (6): 821-826.DOI: 10.7523/j.issn.2095-6134.2006.6.016

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非线性不确定系统的模糊自适应 输出反馈跟踪

陈海通; 姜长生   

  1. 南京航空航天大学自动化学院,210016,南京
  • 收稿日期:1900-01-01 修回日期:1900-01-01 发布日期:2006-11-15

Fuzzy Adaptive Output Feedback Tracking of Uncertain Nonlinear Systems

CHEN Hai-Tong, JIANG Chang-Sheng   

  1. College of Automation Engineering, Nanjing University of Aeronautics & Astronautics
  • Received:1900-01-01 Revised:1900-01-01 Published:2006-11-15

摘要: 本文研究了非仿射非线性系统的模糊自适应 输出反馈跟踪。在非仿射非线性模型存在不确定的情况下,使用模糊自适应控制器对系统进行控制,并基于Lyapunov稳定性定理得出自适应律。通过解一个代数Riccati方程实现了 跟踪性能。估计状态通过引入高增益观测器得到,实现了系统的输出反馈控制。最后,通过对一个数值例子的仿真验证了算法的有效性。

关键词: 模糊自适应, 非仿射非线性系统, , 输出反馈,高增益观测器

Abstract: A fuzzy adaptive output feedback controller for non-affine nonlinear systems is studied. This paper considers uncertain or ill-defined non-affine nonlinear systems and employs a fuzzy logic adaptive controller to control the systems. Adaptive law is designed based on Lyapunov stability. tracking performance is achieved through solving a algebraic Riccati equation. A high gain observer is employed to obtain the estimation of states and then output feedback controller is constructed. At last, a simulation example is given to illustrate the performance of the proposed method.

Key words: Fuzzy adaptive, non-affine nonlinear systems, , output feedback, high gain observer;

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