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		Maiying ZHONG,Chuanfeng MA,Steven X. DING.[en_title][J].Control Theory and Technology,2005,3(1):35~41.[Copy]

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MaiyingZHONG,ChuanfengMA,StevenX.DING
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Received:November 15, 2004

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Design of paramet ric fault detection systems: An H- infinity optimization app roach

Maiying ZHONG, Chuanfeng MA, Steven X. DING

(Control Sciences and Engineering School , Shandong University ,Jinan Shandong ,250061 , China;The Institute for Automatic Control and Complex Systems , University of Duisburg- Essen Bismarckstrasse 81 BB ,47048 Duisburg ,Germany)

Abstract:

Problems related to the design of observer- based parametric fault detection (PFD) systems are studied. The core of our study is to first describe the faults occurring in system actuators , sensors and components in the form of additive parameter deviations ,then to transform the PFD problems into a similar additive fault setup , based on which an optimal observer- based optimization fault detection approach is proposed. A constructive solution optimal in the sense of minimizing a certain performance index is developed. The main results consist of defining parametric fault detectability , formulating a PFD optimization problem and its solution. A numerical example to demonstrate the effectiveness of the proposed approach is provided.

Key words: Fault detection filter Optimization Parametric fault Residual Robustness