Detection filter design for LPV systems-a geometric approach

Authors:
J. Bokor;G. Balas
Affiliations:
Computer and Automation Research Institute, Hungarian Academy of Sciences, Kende u. 13-17., Budapest H-1111, Hungary;Department of Aerospace Engineering and Mechanics, University of Minnesota, MN 55455, USA
Venue:
Automatica (Journal of IFAC)
Year:
2004

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Abstract

This paper investigates fault detection and isolation of linear parameter-varying (LPV) systems by using parameter-varying (C,A)-invariant subspace and parameter-varying unobservability subspaces. The so called ''detection filter'' approach, formulated as the fundamental problem of residual generation (FPRG) for linear time-invariant (LTI) systems, is extended for a class of LPV systems. The question of stability is addressed in the terms of Lyapunov quadratic stability by using linear matrix inequalities. The results are applied to the model of a generic small commercial aircraft.