Multi-model-based flight control system reconfiguration control in the presence of input constraints

In this paper, a new active fault tolerant control strategy is proposed for the plant in the presence of actuator fault and input constraints, which is a combination of a direct adaptive control algorithm with multiple model switching, and the µ-modification is introduced in the model reference control architecture. Based on Lyapunov-Krasovskii stability theory, the stability of overall system is guaranteed and the boundedness of all signals is ensured, while appropriate switching of the multiple models ensures asymptotic tracking for the system states. Simulation results are presented to illustrate the efficiency of the developed fault-tolerant control approach.