Research on Flight Collision Avoidance Control on The Sun-Earth Libration Points Based on Barrier Theory

基于界栅的日地平动点编队飞行碰撞规避控制研究

¹ School of Astronautics, Northwestern Polytechnical University, Xi'an 710072, China
² National Key Laboratory of Aerospace Flight Dynamics, Xi'an 710072, China

Received: 12 May 2017

Abstract

In the spacecraft formation task, a spacecraft failure or formation of the mission to change the need for reconstruction of the formation. In the process of reconstruction, how to carry out spacecraft anti-collision has been widespread concern. In this paper, barrier theory is adopted. By establishing Hamilton function, the optimal control law is obtained. According to the theory of barrier construction, the corresponding barrier trajectory is constructed. Then, the barrier is divided into collision area and non-collision area, so as to realize the formation flight anti-collision design. The simulation results show that the method can avoid the perturbation effect and has a certain theoretical value for the anti-collision between the spacecrafts during the formation process.

摘要

在航天器编队任务时，某颗航天器发生故障或者编队任务发生改变就需要对编队进行重构。在重构过程中，如何进行航天器防碰已经受到了广泛关注。采用界栅理论（barrier），通过建立Hamilton函数，并取得最优控制律，再根据界栅构造理论构造出界栅轨迹，将对策区分为碰撞区与非碰撞区，从而实现日地平动点编队飞行防碰撞设计。经过仿真实验表明，该方法可避开摄动影响，并对飞行器编队队形重构过程航天器间防碰具有一定的意义。