CAJ | 학술논문

嫦娥三号要准确在月球预定区域内实现软着陆，关键是着陆轨道与控制策略的设计。首先，用物理图解法建立三维坐标系和开普勒定律，求出嫦娥三号近远月点的坐标和速度大小，结果表明与基准数据误差较小。其次，以燃耗最优为指标，综合考虑速度约束和落点位置以及着陆的安全性，应用归一化的二体模型，得到燃料最优的软着陆轨道。对嫦娥三号探测器推动力进行了敏感性分析。
항아삼호요준학재월구예정구역내실현연착륙，관건시착륙궤도여공제책략적설계。수선，용물리도해법건립삼유좌표계화개보륵정률，구출항아삼호근원월점적좌표화속도대소，결과표명여기준수거오차교소。기차，이연모최우위지표，종합고필속도약속화낙점위치이급착륙적안전성，응용귀일화적이체모형，득도연료최우적연착륙궤도。대항아삼호탐측기추동력진행료민감성분석。
The design of landing trajectory and control strategy is the key to achieve a soft landing on the moon in an accurate schedule area for Chang ’e -3. Firstly, seting up the 3d coordinate system and Kepler’s laws by using the physical diagram method, we get coordinates and velocity at near and far month point, the re-sults show that the error is smaller. Secondly, minimal fuel as an index, speed constraints and placement posi-tion and the safety of the landing are considered, we get the fuel optimal soft landing orbit by normalized two body model. Finally, sensitivity analysis was performed on the driving force of Chang ’e -3 detector.