Abstract
This paper consider the problem of fault detection and isolation
in continuous- and discrete-time systems while using zero or
almost zero threshold. A number of different fault detections and
isolation problems using exact or almost exact disturbance
decoupling are formulated. Solvability conditions are given for
the formulated design problems together with methods for
appropriate design of observer based fault detectors. The l-step
delayed fault detection problem is also considered for
discrete-time systems . Moreover, certain indirect fault detection
methods such as unknown input observers, eigenstructure
assignment, factorization, and parity equation approaches are
generalized by including the almost estimation methods in addition
to exact estimation methods
Original language | English |
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Journal | International Journal of Robust and Nonlinear Control |
Volume | 9 |
Issue number | 4 |
Pages (from-to) | 215-238 |
ISSN | 1049-8923 |
Publication status | Published - 1999 |