大射电望远镜精调稳定平台机械结构设计及准动力分析

The mechanical design and quasi dynamic analysis of a fine tuning stable platform for the large telescope

设计了一种大型Stewart型平台用于大射电望远镜轨迹跟踪二级精调控制 ,通过坐标变换 ,推导出其运动控制的数学模型 ,并利用Jacobian矩阵 ,进行了动力学分析 ,给出了其运动精度分析结果 ,证明其应用到大射电望远镜工程中是切实可行的 ,足以保证轨迹跟踪精度的要求 .

A stable Stewart Platform is designed for large telescope(LT) fine tuning, a mathematical model for kinematics control is gained by coordinate transformation, quasi dynamic analysis is made with Jacobian matrix, and kinematics accuracy results are given, which show that the designed Stewart Platform is effective for the accuracy requirement of LT feed trajectory control.