多输入多输出非线性多时滞系统的直接自适应模糊跟踪控制  

Direct adaptive fuzzy tracking control for MIMO nonlinear systems with multiple time delays

作　　者：杜贞斌[1] 陈为胜[2] 

机构地区：[1]烟台大学计算机学院,山东烟台264005 [2]西安电子科技大学应用数学系,西安710071

出　　处：《控制与决策》2009年第9期1432-1435,共4页Control and Decision

基　　金：国家自然科学基金项目(60804021);山东省教育厅科技计划项目(JS08J4)

摘　　要：针对多输入多输出非线性多时滞系统,提出了一种直接自适应模糊跟踪控制方案.该方案有机综合了自适应控制和H∞控制,构建了一种自适应时滞模糊逻辑系统用来逼近有多重时滞的未知函数;设计了H∞补偿器来抵消模糊逼近误差和外部扰动.根据跟踪误差给出了参数调节规律,构造了包含时滞的李亚普诺夫函数,从而证明了误差闭环系统满足期望的H∞跟踪性能.仿真结果表明了该方案的可行性.This paper presents a direct adaptive fuzzy tracking control scheme for MIMO nonlinear systems with multiple time delays. The scheme organically synthesizes adaptive control and H∞ control. A kind of adaptive timedelay fuzzy logic systems are constructed and used to approximate the unknown functions with multiple time delays. An H∞, compensator is designed to eliminate fuzzy approximation errors and external disturbances. The adjusting laws for parameters are derived by the tracking error. The Lyapunov function with time delays is constructed, and then it is proved that the error closed loop system satisfies the anticipant H∞ tracking performance. The simulation results show the feasibility of the control scheme.

关 键 词：非线性系统 时滞 模糊逻辑系统 跟踪控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]