标题：H-infinity fault estimation for a class of linear time-delay systems in finite frequency domain
作者：Dong, Quanchao; Zhong, Maiying; Ding, Steven X.
作者机构：[Zhong, Maiying] Beihang Univ, Sch Instrumentat Sci & Optoelect Engn, Beijing 100191, Peoples R China.; [Dong, Quanchao] Shandong Univ, Sch Control 更多
通讯作者地址：[Zhong, MY]Beihang Univ, Sch Instrumentat Sci & Optoelect Engn, Beijing 100191, Peoples R China.
来源：JOURNAL OF SYSTEMS ENGINEERING AND ELECTRONICS
关键词：fault estimation; time-delay; generalized coordinate change; generalized; Kalman-Yakubovich-Popov lemma; finite frequency domain
摘要：This paper deals with the problem of H-infinity fault estimation for linear time-delay systems in finite frequency domain. First a generalized coordinate change is applied to the original system such that in the new coordinates all the time-delay terms are injected by the system's input and output. Then an observer-based H. fault estimator with input and output injections is proposed for fault estimation with known frequency range. With the aid of Generalized Kalman-Yakubovich-Popov lemma, sufficient conditions on the existence of the H-infinity, fault estimator are derived and a solution to the observer gain matrices is obtained by solving a set of linear matrix inequalities. Finally, a numerical example is given to illustrate the effectiveness of the proposed method.