Closed-Loop Actuator-fault Detection and Isolation Using Set Tubes and Invariant Sets

Feng Xu (1) , Vicenç Puig (1) , Carlos Ocampo-Martinez (1) , Florin Stoican (2) , Sorin Olaru (3)

1 UPC - Universitat Politècnica de Catalunya [Barcelona]
2 UPB - University Politehnica of Bucharest [Romania]
3 E3S - Supélec Sciences des Systèmes

This paper proposes a new actuator-fault detection and isolation (FDI) strategy for closed-loop discrete time-invariant systems by using invariant sets and tubes. In this approach, invariant sets are used for fault detection (FD) and the establishment of FDI conditions, while the tubes are generated for fault isolation (FI) at transient state. Comparing with the existing set-theoretic FDI techniques, the advantage of this approach consists in that it exhibits a balance between the conservativeness of FDI conditions, the fast FI response and the computational complexity. The eectiveness of the proposed technique is illustrated by a numerical example.

Domains: Engineering Sciences [physics]

Feng Xu, Vicenç Puig, Carlos Ocampo-Martinez, Florin Stoican, Sorin Olaru. Closed-Loop Actuator-fault Detection and Isolation Using Set Tubes and Invariant Sets. IFAC WORLD CONGRESS 2014, Aug 2014, Cape Town, South Africa. pp.8030-8035, ⟨10.3182/20140824-6-ZA-1003.01653⟩. ⟨hal-01095941⟩