空间非合作目标的逼近控制仿真研究

近距离的相对运动逼近过程是空间在轨服务中非常重要的一个阶段.对该过程的动力学与控制过程开展研究,建立服务航天器向目标航天器逼近过程中的相对姿态运动模型和相对位置运动模型,在目标航天器本体坐标系下,采用直线逼近制导律,基于经典的比例-微分控制律对逼近过程中的相对运动状态进行跟踪控制.最后,建立Simulink动力学模型并开展仿真分析,仿真结果表明六维相对运动模型的可靠性以及控制方法的有效性.

Simulation Analysis on Proximity Control for a Space Non-Cooperative Target

The proximity process in a close distance is very important for on-orbit servicing. In this paper,the kinematics and control for this process are studied. The relative position model and relative attitude model of the servicing spacecraft towards target spacecraft are established. The proximity guidance law in straight line is used with respect to the coordinate of the target spacecraft. The relative motion states are tracked and controlled under a usual PD control law. Finally,the Simulink dynamics model is established,and the corresponding simulation and analysis are carried out. The simulation results indicate the reliability of six dimensional relative motion models and the validity of the control method.