基于在线轨迹生成的末端能量管理段复合制导技术

Composite Guidance Based on Onboard Trajectory Generation for Terminal Area Energy Management

设计了一种基于在线轨迹生成的空天飞行器末端能量管理段预测校正复合制导方法,解决了传统制导方法实现复杂,鲁棒性不够强的问题。首先,建立能量-高度/航程的走廊和特征剖面,将制导问题转化为高度控制和航程调节问题;然后,研究了捕获转弯航向角迭代搜索算法,在线完成地面航迹生成和航程预测;最后,基于在线生成的航迹和预测的航程,设计了减速板开启角度和飞行器高度对航程联合校正的复合制导策略。仿真结果表明:存在参数不确定性和初始状态偏差的情况下,该制导方法依然具有良好的鲁棒性和精度。

The predictor-corrector composite guidance based on onboard trajectory generation for Terminal Area Energy Management（ TAEM） Phase is designed. First,the corridor and profile of energy-high/range are founded,so the guidance problem is changed to high control and range corrector. Then,iterative search algorithm for the acquisition turning heading angle is searched,and the trajectory and range are online-obtained. At last,based on onboard generated trajectory and range,the angle of airbrake and the high of vehicle are corrected to modify the range. The simulation results of the TEAM guidance with parameter uncertainty and the initial state dispersion also demonstrate the robustness and precision of the proposed algorithm.