Journal
AUTOMATICA
Volume 49, Issue 6, Pages 1830-1837Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.automatica.2013.02.043
Keywords
Fault tolerant control (FTC); Integral sliding mode (ISM) control; Linear matrix inequalities (LMI)
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In this paper a new fault tolerant control scheme is proposed, where only measured system outputs are assumed to be available. The scheme ensures closed-loop stability throughout the entire closed-loop response of the system even in the presence of certain actuator faults/failures. This is accomplished by incorporating ideas of integral sliding modes, unknown input observers and a fixed control allocation scheme. A rigorous closed-loop stability analysis is undertaken, and in fact a convex representation of the problem is created in order to synthesize the controller and observer gains. The efficacy of the proposed scheme is tested by applying it to a benchmark civil aircraft model. (C) 2013 Elsevier Ltd. All rights reserved.
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