400mm跟踪望远镜结构设计和分析

发布时间：2018-03-04 23:37

本文选题：mm跟踪望远镜　切入点：支撑结构　出处：《红外与激光工程》2014年08期 　论文类型：期刊论文

【摘要】：针对主镜口径为400mm口径的跟踪望远镜的设计要求,提出了一种有效的结构形式。首先确定了望远镜的光学结构形式和系统参数,并将整个系统分成了几个主要组成部分。接着着重确定了主镜室的结构形式,通过优化最佳支撑位置确定了主镜的支撑结构;同时确定了次镜室以及三翼梁的结构。然后运用有限元建模、分析的方法,重点分析了反射镜的面形精度受重力变形和温度变化的影响,进行了整个望远镜系统的刚度分析和温度变化对主次镜间隔的影响。保证了主镜在极限情况下面形RMS30/λ,整个系统具有较好的刚度和环境适应性。分析结果表明,反射镜支撑结构以及整个系统的设计均达到了设计要求,可以为类似结构提供一定的指导。
[Abstract]:According to the design requirements of the tracking telescope with primary mirror aperture of 400mm aperture, an effective structure form is proposed. Firstly, the optical structure and system parameters of the telescope are determined. The whole system is divided into several main parts. Then the structure of the primary mirror chamber is determined, and the supporting structure of the primary mirror is determined by optimizing the optimum supporting position. At the same time, the structure of the secondary mirror chamber and the three-wing beam is determined, and then the influence of gravity deformation and temperature variation on the surface shape accuracy of the mirror is analyzed by the finite element modeling and analysis method. The stiffness analysis of the whole telescope system and the effect of temperature change on the primary and secondary mirror spacing are carried out. The RMS30/ 位 shape of the primary mirror under the limit condition is ensured, and the system has good stiffness and environmental adaptability. The analysis results show that, The mirror supporting structure and the design of the whole system meet the design requirements, which can provide some guidance for similar structures.
【作者单位】：中国科学院长春光学精密机械与物理研究所;
【基金】：中国科学院三期创新工程专项基金(O65X32C060)
【分类号】：TH743

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