%0 Journal Article
%T A reaching-law method for uncertain discrete variable-structure control systems<br>不确定离散变结构控制系统的趋近律方法
%A GAO Cun-chen
%A LIU Yun-long
%A LI Yun-yan
%A <br>高存臣
%A 刘云龙
%A 李云艳
%J 控制理论与应用
%D 2009
%I 
%X Existing design methods for uncertain discrete variable-structure control systems(UDVSCS) are discussed.An improved reaching-law for UDVSCS is proposed based on the sigmoid function. By applying the proposed reachinglaw to UDVSCS, the stability of origin and the smoothness of the converging process of the system are better than those obtained by using the exponential rate reaching-law and the variable rate reaching-law; the system states are kept in a single converging pattern during the process of reaching the origin. With this design method, the sliding surface can be reached quickly and the system chattering can be reduced at the same time, facilitating the design of variable-structure control. Simulation results show that the proposed method is feasible and effective.
%K uncertain discrete system
%K variable structure control
%K reaching law
%K sigmoid function
%K quasi-sliding mode<br>不确定离散系统
%K 变结构控制
%K 趋近律
%K s型函数
%K 准滑动模态
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=970898A57DFC021F93AB51667BAED7F7&aid=282585E7D0DA11CF9CEC3E66128C39B1&yid=DE12191FBD62783C&vid=96C778EE049EE47D&iid=DF92D298D3FF1E6E&sid=DBEE434FCBFED297&eid=A1BB529A18D3A83E&journal_id=1000-8152&journal_name=控制理论与应用&referenced_num=1&reference_num=12