西南交通大学学报2013，Vol.48Issue(2)：390-394,5.DOI:10.3969/j.issn.0258-2724.2013.02.030
航天器有限推力轨道转移的轨迹优化方法
Trajectory Optimization Method for Spacecraft Orbit Transfer with Finite Thrust
摘要
Abstract
In order to achieve the rapid maneuver and effective fuel saving of the spacecraft with finite thrust in flight,trajectory planning based on psedospectral method was studied.Orbit transfer was modeled mathematically with Gauss dynamics equations by using improved equatorial orbital elements.The model could overcome the singularity problems when the orbital eccentricity was 0° or the orbit inclination was 0° or 90°.Then,the fuel optimal performance index function,terminal constraint,and path constraint conditions were given; and the original continuous optimization problem was converted to the equivalent finite nonlinear planning problem by psedospectral method.Finally,the sparse nonlinear optimizer (SNOPT) algorithm was utilized to solve the trajectory planning problem,and the specific design steps and methods were given.Compared with the optimization method using fmincon function,the proposed method can reduce the optimization time by 61％ and save the fuel consumption by 18％ when the maximum thrust is 20 N.关键词
轨道转移/拟谱法/轨迹优化/有限推力Key words
orbit transfer/the psedospectral method/trajectory optimization/finite thrust分类
航空航天引用本文复制引用
王常虹,曲耀斌,陆智俊,安昊,夏红伟,马广程..航天器有限推力轨道转移的轨迹优化方法[J].西南交通大学学报,2013,48(2):390-394,5.基金项目
本文工作得到哈尔滨工业大学优秀青年教师培养计划项目(HITQNJS.2009.007)的资助. （HITQNJS.2009.007）
