高阶重力和力矩对空间太阳能电站运动的影响  

The Influences of Higher Order Gravitational Force and Torque to the Motion of Space Solar Power Station

作　　者：吴志刚[1,2] 刘玉亮[1,2] 张开明[1,2] 邬树楠[1,2] 

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116024 [2]大连理工大学航空航天学院,大连116024

出　　处：《空间控制技术与应用》2016年第4期1-5,35,共6页Aerospace Control and Application

基　　金：国家自然科学基金资助项目(11432010&11502040);中央高校基本科研资助项目(DUT15LK31)

摘　　要：相比于传统卫星,空间太阳能电站具有超大的尺寸,高阶重力和重力梯度对其轨道和姿态运动的影响将不能再忽略.文中以地球同步拉普拉斯轨道上的太阳塔式空间太阳能电站为例,研究了在考虑地球扁率的引力场中,高阶重力和力矩对空间太阳能电站姿轨运动的影响.首先将空间太阳能电站的重力势函数进行泰勒展开,并保留至四阶项;然后求出电站所受到的重力和重力梯度力矩,并给出其轨道和姿态运动方程;最后通过数值仿真来分析不同阶次的力和力矩对轨道运动的影响.结果表明:高阶力对卫星轨道的影响较大,可达到百米量级;高阶力矩对卫星姿态运动影响则较小,可忽略不计.Comparing to traditional satellites, space solar power stations have large size. The influences of higher order gravitational force and torque to the orbital and attitude motion should be considered careful- ly. The influences of higher order gravitational force and torque to the orbital and attitude motion of a sun Tower space solar power station working in the earth＇ s gravitational field which the oblateness of earth is considered will be studied in this paper. Firstly, the gravitational potential function will be expanded in a Taylor series up to fourth order; Secondly, the gravitational force and torque of a solar power station will be derived and the equations of the attitude and orbital motion of solar power station are given. At last, the influence of the higher order gravitational force and torque to the orbital and attitude motion will be analyzed by numerical simulation. The result shows that the influence of the higher order gravitational force to the orbital motion can reach the order of lOOm and the influence of the higher order gravitation torque to the attitude motion is small enough to be neglected.

关 键 词：高阶重力和力矩 泰勒展开 地球扁率 空间太阳能能电站 

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]