重力梯度稳定卫星伸展动力学研究  

SATELLITE DYNAMICS DURING DEPLOYMENT OF THE GRAVITY GRADIENT BOOM

作　　者：林原[1] 李俊峰[1] 

机构地区：[1]清华大学工程力学系,北京100084

出　　处：《工程力学》2002年第5期135-138,共4页Engineering Mechanics

基　　金：国家自然科学基金项目(19702011)

摘　　要：针对重力梯度卫星姿态控制系统的设计需求，本文首先推导了卫星姿态和重力梯度杆伸展的耦合动力学方程，其中重力梯度杆伸展动力学方程是根据其结构特点利用能量方法建立的。最后以“清华一号”卫星为算例进行了数值仿真计算，在不同初始条件下，得到了重力梯度杆伸展过程中杆长和三个姿态角的变化规律。探讨了保证重力梯度杆伸展后卫星姿态能正确捕获所需的条件。In order to satisfy the requirement of attitude control system design for gravity gradient stabilized satellite, this paper presents the coupling dynamics equations of satellite attitude and gravity gradient boom deployment. Considering the boom structure, the deformation energy method is introduced to establish the dynamics equation of the gravity gradient boom. As an example, dynamics of micro-satellite “Tsinghua-1” during the boom deployment is analyzed under different initial conditions. The conditions for proper attitude acquisition after boom deployment are obtained from the simulation.

关 键 词：重力梯度稳定 伸展动力学 应变能 卫星姿态 非线性 “航天清华一号”卫星 

分 类 号：V474[航空宇航科学与技术—飞行器设计]