Publication
Actuator-fault detection and isolation based on set-theoretic approaches
Journal Article (2014)
Journal
Journal of Process Control
Pages
947-956
Volume
24
Number
6
Doc link
http://dx.doi.org/10.1016/j.jprocont.2014.04.016
File
Authors
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Xu, Feng
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Puig Cayuela, Vicenç
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Ocampo Martínez, Carlos A.
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Stoican, Florin
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Olaru, Sorin
Abstract
In this paper, an actuator-fault detection and isolation (FDI) approach is proposed. The FDI scheme is based on a bank of interval observers, each of which is designed to match a healthy or faulty system mode. To ensure reliable FDI for all considered faults, a collection of invariant set-based FDI conditions are established for the proposed technique. Under the guaranteed FDI conditions, all the considered faults can be detected and isolated during the transition induced by fault occurrences. Comparing with the existing set-based FDI approaches, the advantage of the proposed technique consists in that it combines the advantages of interval observers in the transient-state functioning and the advantages of invariant ses in the steady-state functioning. This paper is completed with the study of a continuous stirred-tank reactor (CSTR), which illustrates the effectiveness of the proposed method.
Categories
automation, control theory, observability.
Author keywords
interval observers, invariant sets, fault diagnosis, fault isolation, CSTR
Scientific reference
F. Xu, V. Puig, C. Ocampo-Martínez, F. Stoican and S. Olaru. Actuator-fault detection and isolation based on set-theoretic approaches. Journal of Process Control, 24(6): 947-956, 2014.
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