Terminal滑模自适应控制实现一类不确定混沌系统的同步  

Synchronization of Chaotic Systems with Parametric Uncertainty Using Terminal Sliding Mode Adaptive Control

作　　者：吴立刚[1] 王常虹[1] 曾庆双[1] 

机构地区：[1]哈尔滨工业大学空间控制与惯性技术研究中心,哈尔滨150001

出　　处：《控制与决策》2006年第2期229-232,240,共5页Control and Decision

基　　金：国家自然科学基金项目(69874008)

摘　　要：应用T erm ina l滑模控制技术和选择指数趋近律来综合滑模控制器,实现一类混沌系统的状态同步.在控制器中引入一类简单的自适应律,用以在线估计界参数.该设计方案消除了滑模控制的到达阶段,状态始终保持在滑模面上,并能在有限时间内趋近于原点.与一般滑模控制同步实现相比,具有更小的同步时间和鲁棒性.通过对Du ff-ing-Ho lm es系统的同步仿真,验证了该方法的可行性.By applying terminal sliding mode control technique and selecting exponential reaching law, a terminal sliding mode controller is synthesized, and then applied to synchronization of a class of chaotic systems with mismatched parametric uncertainties. Furthermore, a simple adaptive law is introduced to on-line estimate the parameter bounds. This design scheme eliminates the reaching phase of sliding mode control, and the synchronization system states stay on the sliding surface all the time. Therefore, the time of synchronization is shorten comparing with the ordinary sliding mode control. The simulation of Dulling-Holmes system is presented to show the effectiveness of the proposed method.

关 键 词：混沌同步 TERMINAL滑模控制 自适应控制 鲁棒性 

分 类 号：TP29[自动化与计算机技术—检测技术与自动化装置]