基于非光滑观测器的迟滞三明治系统状态估计  

State estimation for sandwich systems with hysteresis by non-smooth observer

作　　者：周祖鹏[1] 谭永红[2] 

机构地区：[1]西安电子科技大学电子工程学院,陕西西安710071 [2]上海师范大学信息与机电工程学院,上海200234

出　　处：《控制理论与应用》2012年第7期847-856,共10页Control Theory & Applications

基　　金：上海师范大学重点学科资助项目(DZL811;DRL904;DYL201005;DYL201006);上海市教育委员会科研创新资助项目(09ZZ141);国家自然科学基金资助项目(60971004);上海市科委重点资助项目(09220503000;10JC1412200);上海市自然科学基金资助项目(09ZR1423400;10ZR1422400)

摘　　要：针对带迟滞的三明治系统特点,构建了一种非光滑观测器以对系统状态进行估计.首先根据带迟滞三明治系统的特点,采用分离原理,建立了描述系统特性的非光滑状态空间方程.据此构造了能够随系统工作区间变化而自动切换的非光滑观测器,给出了相应的收敛定理及其证明.最后通过仿真,分别比较了非光滑观测器和传统的观测器对状态的跟踪效果,比较结果表明非光滑观测器对于带迟滞三明治系统状态变量估计的准确性要优于传统的观测器.A novel non-smooth observer is proposed to handle the state estimation for sandwich systems with hysteresis. Based on the characteristic of the system, a non-smooth state-space model is proposed by using the separation principle. A non-smooth observer is developed based on the state-space model. The observer is switched among different operating zones automatically according to the operating conditions. The convergence of the non-smooth observer is discussed. Simulation results are presented. The comparison between the proposed non-smooth scheme and conventional methods show that the former has better estimation performance than the others.

关 键 词：非光滑观测器 迟滞 三明治系统 状态估计 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]