空间自主临近操作安全轨迹控制策略研究

针对空间自主临近操作过程中的安全飞行问题,提出一种基于空间矢量的防碰撞和防羽流污染安全轨迹控制策略。首先定义了安全域和安全角的概念;然后,确定了防碰撞和防羽流污染的控制参量,提出了防碰撞和防羽流污染的判断原则;最后,提出了综合考虑防碰撞和防羽流污染的安全轨迹控制策略。仿真计算表明,提出的防碰撞和防羽流污染的控制参量、判断原则和安全轨迹控制策略能够实现航天器自主临近操作的安全飞行。

A Safety Trajectory Control Strategy for Space Autonomous Proximity Operations

Facing the safety flying problems that appear during space autonomous proximity operations,we present a safety trajectory control strategy,which is based on space vectors,for solving both collision avoidance and plume contamination avoidance.Firstly,new concepts of safety area and safety angle are defined;then the control parameters of collision avoidance and plume contamination avoidance are established and the criterion of collision avoidance,eq.(5) in the full paper,and that of plume contamination avoidance,eq.(9) in the full paper, are brought forward based on the control parameters.Finally,we present a safety trajectory control strategy which considers simultaneously both collision avoidance and plume contamination avoidance.Simulation results,given in Fig.4 in the full paper,indicate that the control parameters,criteria and safety trajectory control strategy can achieve the safety flying of spacecraft's proximity operations.