Reconfiguration and optimization of flight control system based on multi-model adaptive method

Abstract

For the reconstruction problem of the flight control law when aircraft actuator was damaged or in failure cases,a new reconfiguration scheme of flight control system was proposed based on the linear quadratic optimal control theory and multi-model adaptive method.Based on fault diagnosis and detection technology,the reference model was obtained by the Linear Quadratic Regulator(LQR).Lyapunov stability theory was applied to ensure the strictly positive real parts and global asymptotic stability of the closed-loop control system.According to the vehicle dynamics control law for fault identification and model switching,the reconfiguration and optimization of vehicle control law based on the multi-model adaption was designed.Against the typical fault conditions,the reconfiguration simulation of the flight control system was made to verify the method,and the corresponding verification results were given,which can ensure that the aircraft effective operation.