Stable fault-tolerant control based on fuzzy performance evaluation

This paper proposes a new design method for a fault-tolerant control system (FTCS) based on performance evaluation. The FTCS utilizes the two actuators against faults, and has a switching mechanism to select the healthy actuator. Also, the activation ratio of the failed actuator is determined by the Fuzzy inference from a priori input-data in the healthy condition. The stability of the FTCS can be guaranteed by switching to the extra control-mode with static redundancy. To confirm the effectiveness of the proposed method, several numerical simulation results are shown in this paper.