%0 Journal Article
%T Robust H-infinity estimation for continuous-time polytopic uncertain systems<br>
%A Aiguo WU
%A Guangren DUAN
%A <br>
%J 控制理论与应用
%D 2005
%I 
%X The design of full_order robust H_infinity estimators is investigated for continuous_time polytopic uncertain systems. The main purpose is to obtain a stable and proper linear estimator such that the estimation error system remains robustly stable with a prescribed H_infinity attenuation level. Based on a recently proposed H_infinity performance criterion which exhibits a kind of decoupling between the Lyapunov matrix and the system dynamic matrices, a sufficient condition for the existence of the robust estimator is provided in terms of linear matrix inequalities. It is shown that the proposed design strategy allows the use of parameter_dependent Lyapunov functions and hence it is less conservative than earlier results. A numerical example is employed to illustrate the feasibility and advantage of the proposed design.
%K H-infinity estimation
%K Polytopic uncertainty
%K Conservativeness
%K Parameter-dependent<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=970898A57DFC021F93AB51667BAED7F7&aid=EBAD01C81D3CEB9FFAE958DEEA1641BB&yid=2DD7160C83D0ACED&vid=38B194292C032A66&iid=E158A972A605785F&sid=23F20F9780C3579E&eid=4F0B2F798E08B761&journal_id=1000-8152&journal_name=控制理论与应用&referenced_num=0&reference_num=0