Synergy of canonical control and unfalsified control concept to achieve fault tolerance

Tushar Jain (1) , Joseph Julien Yamé (1) , Dominique Sauter (1)

1 CRAN - Centre de Recherche en Automatique de Nancy

A behavioral theoretical explanation of active fault tolerant control (FTC) problem is proposed in this note. Precisely, we present the concept of canonical controller and unfalsified control in behavioral context. The synergy of two control concepts re-configures the controller such that the system is tolerant to unknown faults. The main feature of the resulting FTC system is that it does not utilize any model-based fault detection and isolation procedure on-line. Therefore, it relies solely on the time-valued trajectories generated by the unknown plant in the closed-loop environment. In our approach to FTC, these trajectories formulate the control specifications that characterize certain \textit{desired behavior}. Consequently, the controller re-designing process commence when this desired behavior is not satisfied.

Mots clés: Fault tolerant control; canonical controller; unfalsified control

Domaines: Automatique

Tushar Jain, Joseph Julien Yamé, Dominique Sauter. Synergy of canonical control and unfalsified control concept to achieve fault tolerance. 18th IFAC World Congress, IFAC WC'2011, Aug 2011, Milan, Italy. pp.CDROM. ⟨hal-00570348v2⟩