不确定切换时滞系统积分滑模控制  

Integral sliding-mode control for uncertain switched delay systems

作　　者：连捷[1] 张凤[1] 

机构地区：[1]大连理工大学电子信息与电气工程学部,辽宁大连116024

出　　处：《大连理工大学学报》2012年第5期743-748,共6页Journal of Dalian University of Technology

基　　金：国家自然科学基金资助项目(61004040)

摘　　要：研究一类不确定切换时滞系统的积分滑模控制问题.设计积分滑模面,且滑模面的设计依赖于切换系统的初始状态,保证切换系统的状态从初始时刻就保持在滑模面上,消除切换过程中的滑模到达过程,从而改善系统的暂态性能,提高系统的鲁棒性.利用线性矩阵不等式方法,给出滑模面存在的充分条件.在此基础上设计子系统变结构控制器,确保对于一类满足平均驻留时间条件的切换信号,切换系统在滑模面上运行时是指数稳定的.数值仿真证明了所提设计方法的有效性.The problem of the integral sliding-mode control for a class of uncertain switched delay systems is considered. An integral sliding surface depending on the initial states is designed to guarantee the state of the system to remain on the sliding surface from the initial time, and eliminate the reaching phase, thus the transient performance and the robustness of the system are all improved. By using the linear matrix inequation （LMI） technology, the sufficient condition for the existence of the sliding surface is developed. Then, variable structure controllers of subsystems are designed for a class of switching signals satisfying average dwell time, and the switched system in the sliding surface is exponentially stable. A numerical example illustrates the effectiveness of the proposed method.

关 键 词：切换系统 时变时滞 积分滑模控制 平均驻留时间 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]