Self-scheduled H∞ control of linear parameter-varying systems: a design example
Automatica (Journal of IFAC)
Robust model-based fault diagnosis for dynamic systems
Robust model-based fault diagnosis for dynamic systems
Detection filter design for LPV systems-a geometric approach
Automatica (Journal of IFAC)
Design and analysis of robust residual generators for systems under feedback control
Automatica (Journal of IFAC)
Robust residual generation for diagnosis including a reference model for residual behavior
Automatica (Journal of IFAC)
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The work presented in this paper focuses on the design of robust Fault Detection and Isolation (FDI) filters for dynamic systems characterized by LPV (Linear Parameter Varying) polytopic models. A sufficient condition is established to guarantee sensitivity performance of the residual signal vector to faults. Robustness constraints against model perturbations and disturbances are also taken into account in the design method. A key feature of the proposed method is that the residual structuring matrices are optimized as an integral part of the design, together with the dynamic part (i.e. the filter). The design problem is formulated as a convex optimization problem and solved using LMI (Linear Matrix Inequalities) techniques. The proposed method is illustrated on the secondary circuit of a Nuclear Power Plant.