考虑J2项摄动的星座相对运动控制  

Relative motion control for formation flying satellite constellations in the presence of J2 perturbation

作　　者：张洪华[1] 张国峰[1] 林来兴[1] 

机构地区：[1]北京控制工程研究所,北京100080

出　　处：《宇航学报》2003年第5期478-483,共6页Journal of Astronautics

摘　　要：利用轨道某些要素(偏心率,升交点赤经和倾角)的差别可以构成由一颗中心星和几个环绕星组成的近距离星座。在理想中心引力场下,环绕星运行轨迹在水平面投影可以呈现封闭圆形。在地球引力摄动时,这种空间形状将逐渐发散。为此,本文考虑J2项摄动的影响,设计了对其具有鲁棒性的环绕星相对轨道;进而导出了带有J2项摄动的环绕星相对运动方程,并给出了基于惯性笛卡尔坐标系运动学变量的相对轨道控制方法。分析和仿真结果表明,这种控制方法能够实现星座相对运动的高精度控制。One central satellite and several other satellites around it may form a special constellation due to the difference of their orbits,which may have projected circular formation under ideal earth gravity.In the presence of perturbations (including J2 perturbation) the ideal formation degenerates.The optimized formation is thus designed to promote the formation robustness to the J2 Perturbation.Then a control method considering the J2 perturbation based on Encke's linearization equation is proposed to maintain the relative motion of the constellation.The analytical and simulation results show that the method is very effective for the relative motion control with high accuracy.

关 键 词：星座 轨道 控制 相对运动 

分 类 号：V448[航空宇航科学与技术—飞行器设计]