论文部分内容阅读
本文旨在优化大型反光望远镜的轴系设计。选定MMT方位轴支承型式进行了分析计算。得到支承的横向刚度、轴向刚度、倾侧刚度和扭转刚度的计算公式,同时得到了相应的望远镜在各个方向的振动频率。列出两个计算实例,表明调整支承的结构参数:密合因素C、轴承节径R、滚道充填因素m、和滚珠半径r等的数值,就可控制望远镜的自振频率以满足实现稳态跟踪精度的伺服系统带宽的要求。
This article aims to optimize the design of large-scale reflective telescope shaft system. The selected MMT azimuth bearing type was analyzed and calculated. The calculation formulas of lateral rigidity, axial rigidity, tilting rigidity and torsional rigidity of the support are obtained, and the corresponding vibration frequencies of the telescope in all directions are obtained at the same time. Two examples are given to show that adjusting the structural parameters of the support: the intimacy factor C, the bearing pitch radius R, the raceway fill factor m, and the ball radius r can control the natural frequency of the telescope State tracking accuracy servo system bandwidth requirements.