摘要
提出了一种模拟周边桁架式可展开天线展开过程的系统化方法。详细考虑了桁架节点单元具体构造,尤其是过线滑轮参数对系统展开过程的影响,通过分析系统关键点和展开角度的运动学关系以及求解空间滑轮的公切线,提出了精确计算天线展开过程中驱动拉绳长度的方法。给出了天线展开速度与电机牵引拉绳的驱动速度之间的关系,通过控制电机牵引拉绳速度来控制天线的展开过程。数值算例校验了方法的可行性,该方法可应用于一般的空间滑轮绳索系统。
A systematic methodology for analyzing the deployment process of a hoop truss deployable antenna is presented. The specific structure of truss node element is considered exactly, especially the influence of parameters of pulleys on the deployment process of the system. Based on the kinematic relation between each node and deployment angle and a numerical method for solving the common tangent of two space pulleys, a accurate method for calculating the length of the rope in the system during the deployment process is proposed. And also the relation between the driving speed of the motor and the deployment angular velocity of the system is obtained, so that the deployment speed of the system can be controlled according to the design of the driving speed of the motor. Numerical examples prove the validity of the method applied in a general rope-pulley system.
出处
《宇航学报》
EI
CAS
CSCD
北大核心
2014年第1期61-68,共8页
Journal of Astronautics
基金
国家自然科学基金(10972044)
关键词
周边桁架式可展开天线
展开分析
控制
空间滑轮绳索系统
Hoop truss deployable antenna
Analysis of deployment process
Control
Space pulley-rope systems
