Zero assignment for robust H2/H[infinity] fault detection filter design

XUEWU, Dai, ZHIWEI, Gao, BREIKIN, Timofei and HONG, Wang (2009). Zero assignment for robust H2/H[infinity] fault detection filter design. IEEE Transactions on Signal Processing, 57 (4), 1363-1372.

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Official URL: http://dx.doi.org/10.1109/TSP.2008.2010598
Link to published version:: 10.1109/TSP.2008.2010598

Abstract

In practical engineering, it is inevitable that a system is perturbed by noise signals. Unfortunately, filtering may fail to detect some faults when the noise distribution matrix are the same as the fault distribution matrix. In this paper, it is shown that the dynamic feedback gain of a dynamic filter introduces additional zeros to the filter, and both the filter poles and the additional zeros can be assigned arbitrarily. In order to attenuate band-limited noises, the zero assignment technique is used,and an optimal dynamic fault detection filtering approach is proposed by locating the zeros to the noise frequencies and optimizing the poles. Compared to other dynamic filter design approaches, the zero assignment technique gives a better tradeoff between more design freedom and computation costs. As shown in the simulation, a better noise attenuation and fault detection performance have been obtained. The zero assignment in multivariable fault detection filter design would be the main contribution of this paper.

Item Type: Article
Research Institute, Centre or Group: Materials and Engineering Research Institute > Centre for Robotics and Automation > Mobile Machine and Vision Laboratory
Identification Number: 10.1109/TSP.2008.2010598
Depositing User: Helen Garner
Date Deposited: 17 Sep 2012 16:13
Last Modified: 17 Sep 2012 16:31
URI: http://shura.shu.ac.uk/id/eprint/6038

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