具有模糊监督控制器的积分变结构间接自适应控制  

Integral variable structure indirect adaptive control with fuzzy supervisory controller

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计算机系,江苏扬州225009

出　　处：《控制理论与应用》2007年第1期90-94,共5页Control Theory & Applications

基　　金：国家自然科学基金资助项目(60074013);江苏省教育厅自然科学基金资助项目(05KJB520152);扬州大学信息科学学科群资助项目(ISG030606)

摘　　要：针对一类不确定非线性系统,基于变结构控制原理,并利用具有非线性可调参数的模糊系统去逼近过程未知函数,提出一种具有模糊监督控制器的积分变结构间接自适应控制方案．该方案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．仿真结果表明了该方法的有效性．A new integral variable structure indirect adaptive control scheme with fuzzy supervisory controller is developed for a class of uncertain nonlinear systems in this paper. The design is based on the principle of variable structure control. The fuzzy systems with nonlinear adjustable parameters are used to approximate unknown plant functions. With the help of a supervisory controller, the resulting closed-loop system is globally stable in the sense that all signals involved are uniformly bounded. Furthermore, the adaptive compensation term of the optimal approximation error is introduced to minimize the effects of modeling error. By theoretical analysis, it is shown that the tracking error converges to zero. Finally, simulation results demonstrate the effectiveness of the approach.

关 键 词：自适应控制 模糊控制 积分变结构控制 非线性系统 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]