非线性系统的积分变结构间接自适应模糊控制  

Integral variable structure indirect adaptive fuzzy control of nonlinear systems

作　　者：张天平[1] 梅建东[1] 沈启坤[1] 

机构地区：[1]扬州大学信息工程学院,扬州225009

出　　处：《东南大学学报（自然科学版）》2004年第B11期5-10,共6页Journal of Southeast University：Natural Science Edition

基　　金：国家自然科学基金资助项目 (60 0 740 13 );江苏省教育厅指导性资助项目 (KK0 3 10 0 67);扬州大学信息科学学科群资助项目(ISG0 3 0 60 6) .

摘　　要：讨论了一类不确定非线性系统的间接自适应模糊控制问题 .基于变结构控制原理 ,并利用具有线性可调参数的模糊系统去逼近过程未知函数 ,提出一种具有监督控制器的积分变结构自适应模糊控制方法 .该方法通过监督控制器保证闭环系统所有信号有界 .进一步通过引入最优逼近误差的自适应补偿项来消除建模误差的影响 .理论分析证明了跟踪误差收敛到零 .The problem of indirect adaptive fuzzy control for a class of uncerta in nonlinear systems is discussed in this paper. Based on the principle of varia ble structure control, a novel integral variable structure adaptive fuzzy contro l strategy with supervisory controller is developed. The fuzzy systems with line ar adjustable parameters are used to approximate process unknown functions. With t he help of a supervisory controller, the resulting closed-loop system is global ly stable in the sense that all signals involved are uniformly bounded. Furtherm ore, the adaptive compensation term of the optimal approximation error is adopte d to reduce the effects of modeling error. Theoretical analysis verifies that t racking error converges to zero. Simulation results demonstrate the effect iveness of the approach.

关 键 词：非线性系统 模糊控制 积分变结构控制 自适应控制 全局稳定性 

分 类 号：TP273.4[自动化与计算机技术—检测技术与自动化装置]