%0 Journal Article
%T Non-smooth observer for sandwich systems with dead-zone<br>基于非光滑观测器的带死区三明治系统状态估计
%A ZHOU Zu-peng
%A TAN Yong-hong
%A <br>周祖鹏
%A 谭永红
%J 控制理论与应用
%D 2011
%I 
%X In control engineering practice, many systems involving dead-zone can be described by the so-called sandwich systems with dead-zone. In this paper, a novel non-smooth observer is proposed to handle the state estimation for the sandwich systems with dead-zone. Based on the characteristics of the system, a non-smooth state-space equation is constructed by the separation principle; and then, a non-smooth observer is developed based on this state-space equation. The observer can be switched among different operating zones automatically according to the change of operation conditions. The convergence theorem of the non-smooth observer and its proof are given respectively. Simulations are performed. The comparison of simulation results between the proposed non-smooth scheme and the conventional method is illustrated. It shows that the proposed non-smooth approach is much better than the conventional one in estimation performances.
%K non-smooth observer
%K dead-zone
%K sandwich system
%K state estimation<br>非光滑观测器
%K 死区
%K 三明治系统
%K 状态估计
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=970898A57DFC021F93AB51667BAED7F7&aid=BAD6DB028A3BCAC8D743C41ECCB7031C&yid=9377ED8094509821&vid=D3E34374A0D77D7F&iid=5D311CA918CA9A03&sid=EE05CC1F800E4629&eid=A50445FB05D4B1A0&journal_id=1000-8152&journal_name=控制理论与应用&referenced_num=0&reference_num=12