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Restricted diagonal detection filter and updating strategy for multiple fault detection and isolation
Author(s) -
Keller JeanYves,
Sauter Dominique
Publication year - 2011
Publication title -
international journal of adaptive control and signal processing
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.73
H-Index - 66
eISSN - 1099-1115
pISSN - 0890-6327
DOI - 10.1002/acs.1210
Subject(s) - fault detection and isolation , diagonal , filter (signal processing) , isolation (microbiology) , control theory (sociology) , sequence (biology) , fault (geology) , computer science , algorithm , mathematics , control (management) , artificial intelligence , genetics , geometry , microbiology and biotechnology , actuator , computer vision , biology , seismology , geology
In this paper, a restricted diagonal detection filter for multiple fault detection and isolation in linear discrete‐time stochastic systems is presented. The proposed filter makes it possible to generate a minimum variance white innovation sequence having directional properties in response to each fault. For detection and isolation of multiple impulsive faults, a bank of generalized likelihood ratio (GLR) tests is applied to the innovation sequence generated by the detection filter. It is shown that this strategy extends the GLR test of Willsky and Jones ( IEEE Trans. Automat. Control 1976; 21 (1):108112) to the case of multiple impulsive faults appearing simultaneously. Copyright © 2010 John Wiley & Sons, Ltd.