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针对轨道高度低于500km微小卫星姿态控制问题,从充分利用环境力矩的角度出发,提出一种主动磁控+气动稳定力矩的姿态控制方案。该方案较好地解决了局部稳定控制律的全局稳定问题。仿真结果表明:特征距离dcc是影响该控制方案的主要因素。dcc值越大,对控制越有利,但随着dcc值的增大,卫星总体设计难度也会加大,因此实际中应选择合适的dcc值,既满足卫星姿态控制的要求,又保证卫星总体结构设计的难度不至于过大。
Aiming at the microsatellite attitude control problem with orbit height less than 500 km, from a viewpoint of making full use of environmental torque, an attitude control scheme of active magnetically controlled and aerodynamically stable moment is proposed. This scheme solves the global stability problem of local stability control law well. Simulation results show that the characteristic distance dcc is the main factor affecting the control scheme. The bigger the dcc value is, the better the control is. However, as the dcc value increases, the overall design difficulty of the satellite will also increase. Therefore, in practice, the appropriate dcc value should be chosen to satisfy the requirements of the satellite attitude control and ensure the overall satellite The difficulty of structural design is not excessive.