Robust fault detection for discrete-time stochastic systems with non-homogeneous jump processes
Date
2014
Authors
Yin, Y.
Shi, P.
Liu, F.
Teo, K.
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Journal article
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IET Control Theory and Applications, 2014; 8(1):1-10
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Yanyan Yin, Peng Shi, Fei Liu, Kok Lay Teo
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Abstract
The problem of robust fault detection (RFD) is studied for a class of discrete-time stochastic systems with non-homogeneous jump processes. First, a filter-based residual signal generator is constructed. To guarantee the sensitivity to faults and robustness against unknown inputs, both H∞ performance and a new performance index are considered. Then an FD filter, which minimises the influences of the disturbances, modelling uncertainties and increases the sensitivity to faults, is designed. A sufficient condition for ensuring the existence of RFD filter in terms of linear-matrix inequalities is established. A simulation is carried out, illustrating that the proposed RFD filter can detect the faults after their occurrences in a timely manner.
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© The Institution of Engineering and Technology 2013