主被动结合的弹性高超声速飞行器鲁棒自适应控制

Considering the significant aeroservoelasticity of hypersonic flight vehicle（HFV）caused by lightweight material and elongated body，the robust adaptive control is proposed using combined active and passive technique. Firstly，to achieve the efficient online estimation of flexible vibration frequencies and modes，a composite adaptive parameter identification method is designed by introducing performance evaluation and monitoring mechanism，and a filtering estimation strategy is also proposed. Then，the integrated rigid-elastic model is decoupled into the rigid-body and flexible subsystems based on singular perturbation theory. For the flexible subsystem，a cascade-type adaptive notch filter using identified frequencies is constructed to achieve passive notching suppression，while the estimated modes based active feedback control is designed to ensure the stable convergence of flexible modes. For the rigid-body subsystem，the robust tracking control is designed based on finite-time sliding mode disturbance observers. The final elevator deflection is obtained by combining the control inputs of the two subsystems. Finally，simulation results show that the proposed method can effectively guarantee the performance of flexible suppression and rigid-body control for HFV with aeroservoelasticity effect.