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.
出处
《工程力学》
EI
CSCD
北大核心
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)
