%0 Journal Article
%T Optimal diagnostic observer for sampled-data systems<br>采样数据系统最优诊断观测器设计
%A QIU Ai-bing
%A WEN Cheng-lin
%A JIANG Bin
%A <br>邱爱兵
%A 文成林
%A 姜斌
%J 控制理论与应用
%D 2010
%I 
%X The direct design method of optimal diagnostic observer for sampled-data systems is investigated. Firstly, the Luenberger condition of the diagnostic observer for the general discrete-time systems is studied from the transfer function viewpoint. By this condition, an appropriate diagnostic observer for sampled-data systems is built and its hybrid dynamics is derived. Then, the sampled-data fault detection problem is formulated as a ratio-type optimization problem. By using the co-inner-outer factorization technique and the algebra method, we obtain a general optimal solution which makes the discrete-time residuals robust to the continuous-time unknown inputs, but sensitive to faults. Simulation results of a numerical example are presented to demonstrate the effectiveness of the proposed method.
%K fault detection
%K sampled-data systems
%K diagnostic observer
%K optimal design<br>故障检测
%K 采样数据系统
%K 诊断观测器
%K 最优设计
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=970898A57DFC021F93AB51667BAED7F7&aid=CEDA45BF0A0C74F26CC9A593CAEA3599&yid=140ECF96957D60B2&vid=DB817633AA4F79B9&iid=5D311CA918CA9A03&sid=CA0B5EEC0BAD621A&eid=CEA1F7DC6B978724&journal_id=1000-8152&journal_name=控制理论与应用&referenced_num=0&reference_num=0