【摘要】 针对一类单输入单输出非线性多时滞系统,提出了一种自适应模糊跟踪控制方案.该方案结合了自适应控制和H_∞控制.构建了自适应时滞模糊逻辑系统用来逼近未知时滞函数;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.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有效性.更多还原

【Abstract】 A direct adaptive fuzzy tracking control scheme is proposed for a class of SISO nonlinear systems with multiple time delays.The control scheme combines adaptive control with H_∞control.Adaptive fuzzy logic systems with time delays are constructed to approximate the unknown functions with time delays.An H_∞compensator is designed to eliminate fuzzy approximation errors and external disturbances.The adaptive laws of the parameters are derived by the tracking error.It is proved that the error closed-loop system satisfies the expected H_∞tracking performance.The effectiveness of the proposed control scheme is demonstrated by a simulation example.更多还原