气动辅助空间交会最优轨道设计与闭环导引律  

Optimal Trajectories Design and Closed-loop Guidance Law Study for Aero-assisted Space Rendezvous

作　　者：陈洪波[1] 杨涤[1] 

机构地区：[1]哈尔滨工业大学,哈尔滨150001

出　　处：《航天控制》2006年第6期17-22,26,共7页Aerospace Control

基　　金：国家863高技术项目资助(2004AA722095-1)

摘　　要：给出了同平面HEO-LEO实现空间交会的必要条件;研究了基于气动辅助轨道转移技术实现同平面HEO-LEO的空间交会方案,通过设计一条标准的同平面HEO-LEO气动辅助轨道转移的最优轨迹,得到了轨道转移飞行器(OTV)与目标实现交会必须满足的标准相角;最后对大气飞行段设计了非线性最优闭环导引律,通过引入Lyapunov最陡下降函数,对函数中相应参数进行适当调整,使应用闭环导引律得到的大气内飞行轨迹与最优轨迹充分接近,仿真结果表明该气动辅助空间交会方法正确、可行。Two necessary conditions for coplanar HEO-LEO space rendezvous are proposed. A method based on aero-assisted orbital transfer to realize coplanar HEO-LEO space rendezvous is studied, in which a standard optimal trajectories of coplanar HEO-LEO aero-assisted orbital transfer is designed firstly and the standard phase angle is presented for coplanar HEO-LEO aero-assisted space rendezvous. Finally, a nonlinear optimal closed-loop guidance law for atmospheric flight segment is studied, in which Lyapunov steepest descent function is presented firstly and atmospheric flight trajectory for closed-loop guidance law is made enough approximately with optimal trajectory by adjusting corresponding parameters for the descent function. Numerical results indicate that the space rendezvous method is feasible.

关 键 词：气动力 空间交会 最优轨迹 导引律 

分 类 号：V412.41[航空宇航科学与技术—航空宇航推进理论与工程]