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AN IIR FILTER BASED PARITY SPACE APPROACH FOR FAULT DETECTION
*Hao Ye, *Guizeng Wang, **S. X. Ding and ***Hongyu Su
* Department of Automation, Tsinghua University, Beijing 100084, P.R. China.
E-mail:haoye@tsinghua.edu.cn
** Institute for Automatic Control and Complex Systems, Duisburg University,
Duisburg 47048, Germany. E-mail: s.x.ding@uni-duisburg.de
*** Tsinghua Tongfang Co. Ltd., Beijing 100084, P.R. China.
E-mail: suhy@it.thtf.com.cn
In traditional parity space approaches, a parity vector with a low order means a simple online realization but a bad performance, while that with a high order leads to a good performance but an unacceptable calculation amount. In this paper, by introducing a simple scalar IIR (Infinite Impulse Response) filter, a new kind of parity relation based residual generator and the corresponding optimization approach are proposed. With the new approach, a residual generator can deliver a very good performance index but with a parity vector of low order. Simulation results are given.
Keywords: Fault detection, observers, optimal filtering, optimization problems, robustness
Session slot T-Tu-M12: Uncertainty & Robustness in FDI/Area code 7e : Fault Detection, Supervision and Safety of Technical Processes
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