非线性不确定系统的模糊自适应H∞输出反馈跟踪  

Fuzzy Adaptive H∞ Output Feedback Tracking of Uncertain Nonlinear Systems

作　　者：陈海通[1] 姜长生[1] 

机构地区：[1]南京航空航天大学自动化学院,南京210016

出　　处：《中国科学院研究生院学报》2006年第6期821-826,共6页Journal of the Graduate School of the Chinese Academy of Sciences

基　　金：国家自然科学基金项目(90405011)资助

摘　　要：研究了非仿射非线性系统的模糊自适应H∞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H∞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.A fuzzy adaptive H∞ 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. H∞ tracking performance is achieved through solving an algebraic Riccati equation. A high gain observer is employed to obtain the estimation of states and then output feedback controller is constructed. Finally a simulation example is given to illustrate the performance of the proposed method.

关 键 词：模糊自适应 非仿射非线性系统 H∞ 输出反馈 高增益观测器 

分 类 号：TP11[自动化与计算机技术—控制理论与控制工程]