混沌系统的一般变结构控制方法存在高频抖振和需要事先已知系统不确定项的上界等不足 ,针对这些不足 ,以一类不确定时变混沌系统为例 ,提出了自适应无抖振变结构控制 (ACFVSC)方法 ,以控制混沌系统到任意设定轨道 .该方法不仅能消除滑模面附近的抖振现象 ,实现渐近跟踪 ,而且不需要“不确定项的上界已知”的先验知识 .ACFVSC的渐近跟踪分析与仿真结果都表明 ,只要选择合适的控制器参数 ,就能在有限时间内达到任意的设定跟踪精度 . The general variable structure control method of chaos system has some disadvantages, such as high frequency chattering and the upper bound which needs to know the system uncertainties in advance. In view of these shortcomings, a class of uncertain time-varying chaos system is taken as an example, (ACFVSC) method to control the chaotic system to arbitrarily set orbit, this method can not only eliminate chattering near the sliding surface and achieve asymptotic tracking, but also do not need “the upper bound of the uncertain term is known ”The prior knowledge of ACFVSC asymptotic tracking analysis and simulation results show that as long as the appropriate choice of controller parameters, you can achieve any set tracking accuracy within a limited time.