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月球软着陆轨道优化问题是一非线性、终端时间自由且带有控制约束的最优控制问题.月球探测器软着陆轨道优化的难点在于怎么处理自由的终端时间,如何把非线性的控制问题转换为易于处理的优化问题.本文介绍了月球探测器的几种软着陆方式和月球探测器轨道的多种优化方法,对各种优化算法进行了一个大概的分类,并对各种优化算法的优缺点进行了分析比较.进而,总结了解决月球探测器软着陆轨道优化问题难点的几种有效方法,为未来我国的月球软着陆工程提供了参考.
The lunar soft landing orbit optimization problem is a nonlinear and optimal control problem with terminal time and control constraints.The difficulty of lunar probe soft landing orbit optimization is how to deal with the free terminal time and how to convert the nonlinear control problem Is an easy to handle optimization problem.This paper introduces several kinds of optimization methods of lunar probe’s soft landing modes and lunar probe orbit, and gives a general classification of various optimization algorithms, and optimizes various optimization algorithms Shortcomings were analyzed and compared.Then, several effective methods to solve the problem of the lunar soft landing orbit optimization were summarized, which provided a reference for the future lunar soft landing in China.