空间绳系太阳能电站初始姿态误差影响分析  

Attitude error influence analysis of a space tethered solar power station

作　　者：李学府 蔡志勤[1] 

机构地区：[1]大连理工大学工业装备结构分析国家重点实验室,大连116023

出　　处：《应用力学学报》2017年第5期821-827,共7页Chinese Journal of Applied Mechanics

基　　金：国家自然科学基金(11272071;11432010)

摘　　要：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。The dynamics of a space tethered solar power station are presented. Establish the nonlinear dynamical equations in which the coupling effect of orbital motion and the configuration of the system, the attitude of the subpanel and the vibration of the tether are considered. In both cases, whether the initial attitude errors exist or not, the dynamical behavior of the space tethered solar power station is studied via numerical simulations. The stability of the system is analyzed. The results show that initial attitude errors in three directions have different influences on the system. There is no relative motion in the case that initial attitude errors are in the direction pointing to the center of the earth. However, tension forces in the tethers change when initial attitude errors exist in other directions. The initial attitude errors in the orbital movement direction have the most obvious influences. The small initial attitude errors mainly give rise to small rotations of the subpanel, and the large ones lead to the deviation of the bus system and the configuration change of the space tethered solar power station.

关 键 词：绳系卫星 空间太阳能电站 非线性动力学 姿态运动 

分 类 号：V412.4[航空宇航科学与技术—航空宇航推进理论与工程]