%0 Journal Article
%T Optimal Fault Diagnosis for Networked Control Systems withLarge Time-delays and Noises<br>含大时滞和噪声的网络化控制系统的最优故障诊断
%A LI Juan
%A ZHAO You-Gang
%A YU Yang
%A ZHANG Peng
%A GAO Hong-Wei
%A <br>李娟
%A 赵友刚
%A 于洋
%A 张鹏
%A 高洪伟
%J 自动化学报
%D 2012
%I 
%X The problem of fault diagnosis is investigated for networked control systems (NCS) with large measurement delays and noises. Based on the delay-free transformation approach, a novel design approach to optimal fault diagnoser is proposed. This scheme first establishes an augmented system with hidden fault states, and the networked control system with delays is transformed into a delay-free one by using the delay-free transformation approach. Then, a diagnosability criterion of faults is given. Furthermore, the design problem of the optimal fault diagnoser is transformed into the design problem of a state feedback controller by utilizing the duality principle. Finally, the real-time fault diagnosis is realized by constructing a novel optimal fault diagnoser which meets the quadratic performance index. The feasibility and validity of the proposed scheme are demonstrated by a simulation example.
%K Fault diagnosis
%K networked control systems (NCS)
%K time-delay systems
%K optimal control
%K delay-free transformation<br>故障诊断
%K 网络化控制系统
%K 时滞系统
%K 最优控制
%K 无时滞转换
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=E76622685B64B2AA896A7F777B64EB3A&aid=1393146D229514EDC8BFF5CB6A606DAF&yid=99E9153A83D4CB11&vid=16D8618C6164A3ED&iid=94C357A881DFC066&sid=9596F7248FB5796B&eid=F90340A344159B2E&journal_id=0254-4156&journal_name=自动化学报&referenced_num=0&reference_num=22