Citation: | ZHANG Yabo, SHI Peng, ZHANG Hao, et al. A robust coordinated control method for hovering of electromagnetic spacecraft formation[J]. Journal of Beijing University of Aeronautics and Astronautics, 2019, 45(2): 388-397. doi: 10.13700/j.bh.1001-5965.2018.0282(in Chinese) |
Aimed at the problem of near-Earth orbit hovering of electromagnetic spacecraft formation, a coordinated control method is proposed in the absence of accurate information of reference orbit. The relative motion between spacecraft is described by the TH equation, and the circular orbit of the same cycle as the reference orbit is selected as the nominal orbit. The deviation of the reference orbit from the nominal circular orbit, the Earth's non-spherical gravity, the atmospheric resistance and the other celestial gravitation are classified separately, and they are considered as uncertain and constitute an uncertain system. By introducing the consistency theory, the robust coordinated control law is designed for the target of spacecraft formation hovering under the condition that the electromagnetic action model and the dynamic equation are all uncertain. Considering the optimal and balanced energy consumption and the decoupling of orbital attitude, a scheme of magnetic moment distribution through optimization is given. The simulation results show that the designed robust coordinated control law can achieve high-precision hovering of electromagnetic spacecraft formation. The proposed magnetic moment configuration scheme can realize the rational distribution of magnetic moments.
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