卫星编队飞行队形重构防碰撞方法研究  

Collision Avoidance for Formation Reconfiguration of Satellite Formation Flying

作　　者：田继超[1] 荣思远[1] 崔乃刚[1] 

机构地区：[1]哈尔滨工业大学航天工程系,哈尔滨150001

出　　处：《宇航学报》2009年第4期1525-1530,共6页Journal of Astronautics

基　　金：总装备部武器装备预研基金(514200107HT0109)

摘　　要：队形重构技术是卫星编队飞行领域研究关键问题之一。多颗卫星近距离编队队形初始化、队形调整及重构,卫星之间相对距离变化带来碰撞问题不可忽视。根据卫星间相对位置关系建立队形重构过程中碰撞概率函数表征该过程碰撞发生可能性,研究表明故障卫星的初始相位角及备份卫星进入编队的初始角度对碰撞概率有较大影响。根据Lyapunov稳定性理论设计改进LQR控制器,在保证队形调整控制精度不需增加过多调整时间及能量消耗的同时,可有效降低碰撞概率。碰撞概率计算方法、控制器设计及所得相关结论,对研究卫星编队队形重构过程星间防止碰撞问题具有一定意义。The formation reconfiguration control is a key technology for satellite formation. And the collision avoidance problem for the formation initialisation, maintaining and reconfiguration of multiple satellites flying in neighbouring relative orbit is not neglectable. We use the collision probability function established by the inter-satellite relative position to describe the possibility of collision. If using a LQR controller for formation reconfiguration, the collision probability is relatively high; therefore, an improved LQR controller is introduced based on the Lyapunov stabilization theory to achieve a backup satellite joining in the formation, while reducing the collision probability. A typical numerical simulation demonstrates that the collision probability can be reduced by choosing an appropriate backup satellite or by using the improved LQR controller. The calculation of the collision probability, controller designing and conclusions derived from this paper is of paramount importance for avoiding collision of satellite formation reconfiguration.

关 键 词：卫星编队 队形重构 碰撞概率 改进LRQ方法 防止碰撞 

分 类 号：V448.2[航空宇航科学与技术—飞行器设计]