Abstract
An approach for Fault Tolerant Control dealing with critical fault is proposed in this paper. The aim of Fault Tolerant Control is to preserve after fault occurrence the ability for the degraded system to reach performances as close as possible to those which were initially assigned to the system. After fault detection and isolation, control reconfiguration is a usual way to recover the nominal performances. The reconfiguration strategy proposed here is based on the reliability analysis of the system components. This strategy relies on the existence of system reconfigurability properties related to different set of resources according to the selected structure. The effectiveness and performances of the method are validated in simulation considering a heating system benchmark used in the Intelligent Fault Tolerant Control in Integrated Systems European project (IFATIS EU-IST-2001-32122).
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