上海航天（中英文）2025，Vol.42Issue(6)：36-47,12.DOI:10.19328/j.cnki.2096-8655.2025.06.004
基于轨迹跟踪的小行星软着陆燃料最优制导
Optimal Guidance of Asteroid Soft-landing Fuel Based on Trajectory Tracking
摘要
Abstract
An optimal guidance law for the asteroid soft-landing fuel based on trajectory tracking is proposed based on the sliding mode control method.The guidance is designed and verified by numerical simulation.First,the dynamic model for a probe and the gravitational field model for an asteroid are established.Then,the optimal trajectory planning of the probe fuel is completed through the convex optimization method,and the trajectory tracking guidance law of the sliding mode control method is designed to complete the optimal fuel trajectory tracking.The zero-effort-miss/zero-effort-velocity(ZEM/ZEV)guidance law is used in the final trajectory to make the probe land as vertically as possible at the target position to ensure the safety of the soft-landing.Finally,simulation is carried out with the consideration of the uncertainty of gravity acceleration and the initial state deviation of the probe to verify the robustness of the guidance law.The results show that the guidance law has the advantages of high accuracy,fuel saving,and strong robustness.关键词
小行星软着陆/凸优化/燃料最优轨迹/轨迹跟踪/滑模控制/零控位移偏差/零控速度偏差(ZEM/ZEV)/数值模拟/控制系统Key words
asteroid soft-landing/convex optimization/fuel optimal trajectory/trajectory tracking/sliding mode control/zero-effort-miss/zero-effort-velocity(ZEM/ZEV)/numerical simulation/control system分类
航空航天引用本文复制引用
GUO Zikang,TANG Chao,WANG Pengyu,GUO Yanning..基于轨迹跟踪的小行星软着陆燃料最优制导[J].上海航天（中英文）,2025,42(6):36-47,12.基金项目
国家自然科学基金资助项目(62473110) （62473110）
空间智能控制技术全国重点实验室基金资助项目(HTKJ2025KL502014) （HTKJ2025KL502014）
