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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.13/45103

Title
Actuator fault-tolerant control based on invariant set separation
Author/Creator
Ocampo-Martínez, Carlos;  De Doná, José;  Seron, María M.
Institution
The University of Newcastle. Faculty of Engineering & Built Environment, School of Electrical Engineering and Computer Science
Description
In this paper an actuator fault-tolerant control (FTC) strategy based on invariant set computation is presented. The proposed scheme is based on a bank of observers which match different fault situations that can occur in the plant. Each of these observers produces an estimation error with a distinctive behavior when the observer matches the current fault situation in the plant. With the information of the estimation errors from each of the considered observers, a fault diagnosis and isolation (FDI) module is able to reconfigure the control loop by selecting the appropriate stabilising controller from a bank of precomputed control laws, each of them related to one of the considered fault models. The decision criteria of the FDI is based on the computation of invariant sets of the estimation errors for each fault scenario and for each control configuration. Conditions for the design of the FDI module and for fault- tolerant closed-loop stability are given, and the effectiveness of the approach is illustrated with an example.
Relation
17th International Federation of Automatic Control (IFAC) World Congress. Proceedings of the 17th World Congress of the International Federation of Automatic Control (Seoul, Korea 6-11 July 2008) p. 7276-7281
Relation
http://www.ifac-control.org/publications/meetings-publications
Date
2008
Publisher
International Federation of Automatic Control (IFAC)
Keyword(s)
fault-tolerant control;  actuator faults;  fault diagnosis and isolation;  invariant sets
Resource Type
conference paper
Identifier
http://hdl.handle.net/1959.13/45103
Identifier
ISBN:9781123478902
Reviewed
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"Actuator fault-tolerant control based on invariant set separation"
 
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