Fault-tolerant control design with respect to actuator health degradation: An LMI approach

Ahmed Khelassi (1) , Didier Theilliol (1) , Philippe Weber (1) , Jean-Christophe Ponsart (1)

1 CRAN - Centre de Recherche en Automatique de Nancy

The active fault-tolerant control approach relies heavily on the occurred faults. In order to improve the safety of the reconfigurable system, a methodology to incorporate actuator health in the fault-tolerant control design is proposed for a tracking problem. Indeed, information about actuator health degradation due to the applied control is considered in addition to fault estimation. The main objective is to design a fault-tolerant control system which guarantees a high overall system reliability and dependability both in nominal operation and in the presence of faults. Such an objective is achieved by a control performance index, which is proposed based on system reliability analysis. The fault-tolerant controller is synthesized by using a linear matrix inequality approach.

Mots clés: fault-tolerant control; actuator health; reliability analysis; LMI

Domaines: Automatique / Robotique

Ahmed Khelassi, Didier Theilliol, Philippe Weber, Jean-Christophe Ponsart. Fault-tolerant control design with respect to actuator health degradation: An LMI approach. IEEE Multi-Conference on Systems and Control, MSC 2011, Sep 2011, Denver, Colorado, United States. pp.CDROM. ⟨hal-00653108⟩