DocumentCode :
1501192
Title :
A geometric approach to nonlinear fault detection and isolation
Author :
De Persis, Claudio ; Isidori, Alberto
Author_Institution :
Dept. of Syst. Sci. & Math., Washington Univ., St. Louis, MO, USA
Volume :
46
Issue :
6
fYear :
2001
fDate :
6/1/2001 12:00:00 AM
Firstpage :
853
Lastpage :
865
Abstract :
We present a differential geometric approach to the problem of fault detection and isolation for nonlinear systems. A necessary condition for the problem to be solvable is derived in terms of an unobservability distribution, which is computable by means of suitable algorithms. The existence and regularity of such a distribution implies the existence of changes of coordinates in the state and in the output space which induce an “observable” quotient subsystem unaffected by all fault signals but one. For this subsystem, a fault detection filter is designed
Keywords :
differential geometry; fault diagnosis; nonlinear systems; observability; observers; differential geometry; fault detection; fault isolation; necessary condition; nonlinear systems; observability; observers; unobservability distribution; Distributed computing; Fault detection; Feedback; Filters; Helium; Nonlinear systems; Observability; Signal detection; Signal generators; Stability;
fLanguage :
English
Journal_Title :
Automatic Control, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9286
Type :
jour
DOI :
10.1109/9.928586
Filename :
928586
Link To Document :
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