Time-cooperative Predictor-corrector Robust Guidance for Hypersonic Vehicles
A time-cooperative predictor-corrector robust guidance method is presented for glide phase cooperative guidance of multiple hypersonic vehicles with uncertain parameters.Firstly,a lateral cooperative guidance law of dynamic heading angle error corridor based on remaining flight time is developed to provide favorable conditions for adjusting flight time.A weight function that adapts to the progress of collaborative flight tasks is designed and the remaining flight time is introduced into the predictor-corrector process of longitudinal guidance,which ensures the precision of collaborative flight mission landing points and collaborative time.Then,the uncertain parameters are estimated based on an improved unscented Kalman filter estimation method,and the heading angle error corridor and nominal angle of attack profile are corrected by comprehensive analysis of the remaining flight time and energy,in order to improve the robustness of cooperative guidance system.Finally,simulation tests are carried out in nominal and uncertain conditions,showing that the proposed cooperative robust guidance method possesses feasibility and robustness.
万方数据
维普
