深空探测学报Issue(1)：51-55,5.DOI:10.15982/j.issn.2095-7777.2016.01.008
基于伪谱法的小天体最优下降轨迹优化方法
Small Body Descent Trajectory Optimization Based on Pseudospectral Method
摘要
Abstract
Aimed at the multiple-constraint trajectory optimization problem in the descent phase of small body landing exploration, Gauss pseudospectral method is used for the optimization design and the fuel-optimal descent trajectory is derived. The optimal control model of small body descent trajectory optimization problem is established and discretized using Gauss pseudospectral method. The problem is then solved by transforming into a nonlinear programming problem. Mathematical simulation results show that all the constraints are satisfied, the optimization index of fuel consumption is minimized and the spacecraft reaches the target landing site with zero velocity. Using Gauss Pseudospectral method, the computation process of small body descent trajectory optimization is fast and has high solution accuracy.关键词
小天体/下降/着陆/轨迹优化/Gauss伪谱法Key words
small body/descent/landing/trajectory optimization/Gauss pseudospectral method分类
航空航天引用本文复制引用
袁旭,朱圣英..基于伪谱法的小天体最优下降轨迹优化方法[J].深空探测学报,2016,(1):51-55,5.基金项目
国家重点基础研究发展计划“973”项目(2012CB720000)；国家自然科学基金资助项目(61374216，61304226，61304248)；教育部博士点基金(20121101120006) （2012CB720000）
