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将伪谱最优反馈控制理论应用于再入飞行器制导研究,使用伪谱法进行在线轨道重构,实时反馈更新当前轨道控制量迎角和倾斜角,达到实时最优反馈制导的目的,并采用无量纲化、弹性约束和自适应反馈更新等策略保证算法的实时性。再入飞行仿真表明,轨道重构可以满足实时性要求,阵风干扰下飞行器能达到所要求的终端约束条件,并且制导指令不会出现增加控制难度的抖动现象。
The pseudo-spectral optimal feedback control theory is applied to the guidance of reentry vehicle, the on-line reconstruction of the orbit using pseudospectral method, the real-time feedback updating of the current orbit control angle of attack and tilt angle, and real-time optimal feedback guidance. Dimensionless, flexible constraints and adaptive feedback update and other strategies to ensure the real-time algorithm. The reentry flight simulation shows that the orbit reconstruction can meet the real-time requirements, the aircraft can achieve the required terminal constraints under gust disturbance, and the guidance instructions will not appear to increase the dithering of the control difficulty.