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月球精确软着陆最优标称轨迹在轨制导方法
引用本文:梁栋,刘良栋,何英姿. 月球精确软着陆最优标称轨迹在轨制导方法[J]. 中国空间科学技术, 2011, 31(6): 27-35. DOI: 10.3780/j.issn.1000-758X.2011.06.005
作者姓名:梁栋  刘良栋  何英姿
作者单位:(1 北京控制工程研究所,北京 100190)(2 空间智能控制技术国家级重点实验室,北京 100190)
摘    要:
为实现在月球表面期望的着陆点进行精确软着陆(PPL),且满足燃耗最优性要求,基于提出的LIDAR目标点在轨自主选定的月球精确软着陆方案,对月球PPL最优标称轨迹在轨快速规划制导方法进行研究。首先针对月球PPL三维球体非线性轨道动力学模型,采用Legendre Gauss Lobatto伪光谱方法将轨迹优化的最优控制问题转化为非线性规划问题(NLP),再利用SQP优化算法求解月球PPL最优标称轨迹,最后通过遗传算法对优化结果进行验证,并提出应用遗传算法提供SQP在轨规划初值数据库的方案。仿真结果表明了最优标称轨迹在轨规划方法的快速性和有效性。

关 键 词:制导  精确软着陆  最优轨迹  伪谱法  序列二次规划  遗传算法  月球探测  
收稿时间:2011-03-16

On-board Optimal Nominal Trajectory Guidance Method for Lunar Pinpoint Soft Landing
Liang Dong , Liu Liangdong , He Yingzi. On-board Optimal Nominal Trajectory Guidance Method for Lunar Pinpoint Soft Landing[J]. Chinese Space Science and Technology, 2011, 31(6): 27-35. DOI: 10.3780/j.issn.1000-758X.2011.06.005
Authors:Liang Dong    Liu Liangdong    He Yingzi
Affiliation:(1 Beijing Institute of Control Engineering,Beijing 100190)(2 National Key Laboratory of Science and Technology on Space Intelligent Control,Beijing 100190)
Abstract:
To achieve the pinpoint soft landing(PPL) on a target landing site of lunar surface and minimize the fuel consumption,an optimal nominal trajectory on-board rapid programming guidance method for lunar PPL was studied,based on the proposed guidance strategy with on-board autonomous landing site selection by LIDAR.Firstly,according to the 3-D spherical nonlinear orbit dynamics model,the optimal control problem of trajectory optimization was transformed into a nonlinear program problem(NLP) by using Legendre-G...
Keywords:Guidance Pinpoint landing Optimal nominal trajectory Pseudospectral method Sequential quadratic programming Genetic algorithm Lunar exploration  
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