地球静止轨道混合推进三星库仑编队队形保持控制研究

Formation Keeping Control of Hybrid Propulsion Three-Satellite Coulomb Formation in Geostationary Orbit

研究了地球静止轨道处混合推进三星库仑编队队形保持控制问题.首先考虑未知有界相对摄动影响,建立了地球静止轨道处混合推进三星库仑编队动力学方程.然后基于相对运动解析解,设计了投影圆轨道旋转编队构型.最后采用滑模控制方法,设计了控制器并证明其稳定性,用饱和函数对控制器进行了改进,消除了抖振的影响.通过控制编队内部静电力和补充电推力实现对预设队形的保持.仿真结果表明,混合推进方案响应速度快,控制精度高,达到了控制要求.

The control of three-satellite Coulomb hybrid formation in geostationary orbit is studied in this paper.Firstly,the dynamic equation of hybrid propulsion three-satellite coulomb formation in geostationary orbit is established by considering the influence of unknown bounded relative perturbation.Then,the rotation formation configuration of projected circular orbit is designed based on the relative motion analytic solution.Finally,the sliding mode control method is adopted to design the controller and prove its stability.The saturation function is used to improve the controller and eliminate the influence of chattering.The preset formation can be maintained by controlling the internal electrostatic force and supplementary electric thrust.Simulation results show that the hybrid propulsion scheme has fast response speed and high control precision,and meets the control requirements.