3-Dimensional Lunar Ascent Reference Trajectory Optimization and Analyses via Gauss Pseudospectral Method

摘要：

A Gauss Pseudospectral Method for trajectory optimization is presented and applied successfully to the 3-dimensional lunar ascent problem in this paper. Firstly, the profile of lunar ascent is discussed. In order to setup the optimal control problem, 3-dimensional dynamics and kinematics equations of the lunar ascent is established, the angle of attack and bank angle are chosen as optimal control variables. Then the Gauss Pseudospectral Method is used to transform the optimal control problem into a nonlinear programming problem. At last, the optimum trajectory is attained by a NLP solver. Simulation results and analyses illustrate that GPM have good robustness, strong convergence and is almost insensitive to initial guesses, it’s an effective method for pre-establishing the suboptimal lunar ascent trajectory.

关键词： Lunar Ascent Trajectory Optimization Gauss Pseudospectral Method Nonlinear Programming

作者: Wangwang Liu Weiren Wu Shengying Zhu Haibin Shang

作者单位: School of Aerospace Engineering,Beijing Institute of Technology, Beijing, CO 100081 China. Lunar Exploration Program Center, State Administration of Science, Technology and Industry for Natio School of Aerospace Engineering, Beijing Institute of Technology, Beijing, CO 100081 China

会议类型: 国际会议

会议名称: 2011 China Control and Decision Conference(2011中国控制与决策会议 CCDC)

会议地点: 四川绵阳

会议语种:英文

页码: 219-224

在线出版日期: 2011-05-23（万方平台首次上网日期，不代表论文的发表时间）