FTC approach based on predictive governor

Christophe Aubrun (1) , Boumedyen Boussaid (1) , Mohamed Koni Ben Gayed , Naceur Abdelkrim (2)

1 CRAN - Centre de Recherche en Automatique de Nancy
2 ENIG - Ecole Nationale d'Ingénieurs de Gabès

In this paper, a new approach of reconfigured system is proposed to improve the performance of an active fault tolerant control system. The method is based on model predictive control and reference trajectory adjustment techniques. When an actuator fault occurs in the system, the controller balances to the nearest degraded reference trajectory. A constraint set and cost function are established to avoid actuators saturation and reduce control energy spent in closed loop dynamics. The effectiveness of the proposed method has been illustrated using a hydrothermal system subject to actuator failure and constraints on the actuator dynamic ranges. Satisfactory results have been obtained.

Mots clés: Fault-tolerance; process control; reference governor

Domaines: Automatique

Christophe Aubrun, Boumedyen Boussaid, Mohamed Koni Ben Gayed, Naceur Abdelkrim. FTC approach based on predictive governor. 7th IEEE International Conference on Control and Automation, ICCA 2009, Dec 2009, Chrischurch, New Zealand. pp.2088-2093, ⟨10.1109/ICCA.2009.5410345⟩. ⟨hal-00456252⟩