深空探测转移轨道自主中途修正方法研究  

Study on the Autonomous Midcourse Correction during Cruise Phase of Interplanetary Exploration

作　　者：张晓文[1,2] 王大轶[1,2] 黄翔宇[1,2] 

机构地区：[1]北京控制工稗研奔所,北京100190 [2]空间智能控制技术国家级重点实验室,北京100190

出　　处：《空间控制技术与应用》2009年第4期27-33,共7页Aerospace Control and Application

基　　金：国家863计划(2008AA12A203);国防基础科研(A0320080019)资助项目

摘　　要：针对深空转移轨道,提出以B平面参数为终端参数,采用脉冲控制和线性制导的自主中途修正方法.由自主导航系统定期确定探测器的当前位置和速度,之后利用精确动力学积分递推状态至B平面,得到打靶误差,若误差超出目标精度范围又在自主修正系统修正能力范围内,则立即利用以B平面参数为终端参数的线性制导公式并结合牛顿迭代计算出修正轨道的速度增量.利用中心差分公式计算终端参数对控制参数的敏感矩阵.蒙特卡罗仿真表明,在小偏差前提下该方法能够达到制导目标.Autonomous midcourse correction is a key technique to facilitate autonomy of an interplanetary spacecraft. Using B-plane parameters as target parameters and impulse control method combined with linear guidance, an autonomous orbit correction method used during cruise phase of interplanetary orbit is proposed. First, the navigation system periodically determines positions and velocities of the spacecraft. The states are then mapped onto the B-plane by integrating the dynamics model accurately. If deviation from the desired encounter condition is large enough and is not out of the capability of autonomous midcourse correction system, the velocity increment for correction maneuver is computed by using linear guidance formula combined with Newton iteration method. The sensitivity matrix of target parameters relative to control parameters is numerically computed using finite central difference formula. Monte Carlo Simulation shows that this method is capable of guiding the spacecraft to a successful encounter.

关 键 词：中途修正 B平面 转移轨道 深空探测 

分 类 号：V448.2[航空宇航科学与技术—飞行器设计]