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针对地球同步轨道绳系太阳能电站在轨运行的动力学问题,建立复杂绳系编队系统的动力学模型。此模型考虑了系绳的柔性、太阳能子板的姿态运动、编队系统构型与轨道运动之间相互耦合的特性。在无扰动及存在初始太阳能子板姿态误差的情况下对系统进行动力学仿真,分析了系统的稳定性。结果表明:不同方向上的初始太阳能子板姿态误差对系统的影响不同,指向地心方向上的初始姿态误差不会引起系统的运动,另外两方向上初始姿态误差会引起柔性系绳内力变化从而对系统产生影响,其中轨道运行方向上的初始姿态误差对系统的影响最明显;较小的初始姿态误差所引起的系统运动主要为太阳能子板在其平衡位置附近的小幅往复转动;初始姿态误差较大时,平台系统会大幅偏离其平衡位置,影响空间绳系太阳能电站的构型保持。
Aiming at the dynamic problem of in-orbit operation of geostationary orbit solar power plants, a dynamic model of complex rope system formation is established. This model takes into account the characteristics of the tether’s flexibility, the attitude of the solar daughterboard, and the coupling between formation formation and orbital motion. The dynamic simulation of the system is carried out without disturbance and with the initial attitude errors of solar panels, and the stability of the system is analyzed. The results show that the attitude errors of the initial solar panels in different directions have different effects on the system. The initial attitude error in the direction of the geocentric center does not cause the movement of the system. In addition, the initial attitude error in the two directions causes the change of the internal force of the flexible tether. The influence of the initial attitude error on the system in the orbital direction is the most obvious. The system motion caused by the smaller initial attitude error is mainly the small reciprocal rotation of the solar panel near its equilibrium position. The initial attitude error Larger, the platform system will significantly deviate from its equilibrium position, affecting the space line solar power plant configuration retention.