基于大气阻力的卫星编队构形沿航迹模糊控制方法

大气摄动会造成近地轨道卫星编队构形产生沿航迹方向漂移。面质比直接决定了大气阻力引起的长半轴衰减,因此可以通过调整面质比实现对构形沿航迹漂移的控制。以构形绕飞中心的漂移距离和编队卫星长半轴差作为输入量,以面质比改变量作为控制量,研究了编队构形沿航迹模糊控制方法。设计了输入量的模糊语言变量和模糊控制规则;根据Mamdani模糊推理算法进行模糊推理;以面积中心法实现了控制量解模糊化。仿真结果表明,对于文中给定的算例,沿航迹漂移距离能够控制在20m之内。对于构形存在初始误差的情况下,该方法也具有较好的控制效果。

A Fuzzy Control Method for In-track Drift of Satellite Formation Configuration Based on Atmosphere Drag

LEO satellite formation configurations may get an in-track drift under the perturbation of atmosphere.The area-mass-ratio of the satellite directly influences the decrease of semi-major axis caused by the perturbation atmosphere,so the in-track drift can be controlled by the adjustment of the area-mass-ratio.Taking the drift distance of the formation center and the difference of the semi-major axes as the input,and the change of areamass-ratio as the control,a fuzzy controller for in-track drift of formatio...