摘要
为满足大型航天三线阵立体测绘相机的标定要求,需要设计一台高精度大型转台,其中,微调系统是精密转台的关键部分之一。分析两种基本结构形式的精密转台微调系统的运动学和动力学特性,发现了其传动过程中存在冲击、偏航载荷和微调角度范围小等缺点。为改善微调系统的性能,本文利用多体动力学仿真软件ADAMS对两种基本结构进行优化设计,获得了传动平稳、传递运动准确、动力学性能好、适合大角度范围微调的具有理想运动学和动力学特性的结构方案。
A high precision large-size rotary stage needs to be designed for calibrating the large-scale space threelinear-array camera, and the micro-driving system is one of the key assemblies of the high precision stage. The kinematics and dynamics features of the two basic structures of high precision micro-driving systems were analyzed. Shortcomings of the two basic structures were pointed out, such as dynamic impact, yawing and a small micro-driving range, etc. In order to improve the performance of the micro-driving system, the optimization of the two basic structures was done in ADAMS software. An ideal structure of the micro-driving system is obtained according to the optimization results with the desirable features such as absence of dynamic impact and yawing, transition stabilization, accuracy, better dynamics features and a large micro-driving range.
出处
《机械科学与技术》
CSCD
北大核心
2008年第3期322-325,共4页
Mechanical Science and Technology for Aerospace Engineering
关键词
高精度大型转台
微调系统
动力学分析
优化设计
high precision large-size rotary stage
micro-driving system
dynamic analysis
optimal design
