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对于月球软着陆 ,燃耗最优是制导过程的基本要求。文中首先应用极大值原理设计了最优着陆制导控制律 ,此时求解最优轨迹变成一个两点边值问题(TPBVP)。本文利用一种基于初值猜测技术的打靶法求解这个两点边值问题 ,得到软着陆最优轨迹。结果表明该方法可有效改善迭代计算 ,具有一定的优越性
For the moon’s soft landing, fuel consumption is the best guidance of the basic requirements of the process. In this paper, we first design the optimal land-based guidance control law using the maximum principle, and then solve the optimal trajectory into a two-point boundary value problem (TPBVP). In this paper, we use a shooting method based on initial guess to solve the two-point boundary value problem, and obtain the optimal trajectory of soft landing. The results show that this method can effectively improve the iterative calculation and has some advantages