视频相机反射镜组件结构设计及其胶结工艺研究

	视频相机反射镜组件结构设计及其胶结工艺研究
其他题名	Structure Design and Bonding Technology of Mirror components in Video Camera
	郭骏立
学位类型	硕士
导师	安源
	2015-11
学位授予单位	中国科学院大学
学位专业	机械制造及其自动化
关键词	反射镜组件反射镜支撑结构胶结工艺面形精度rms 随机应力峰值有限元分析
摘要	随着航天技术的不断发展与革新，空间相机的分辨率越来越高，反射镜组件作为空间相机的重要组成部件之一，其面形精度的高低将直接影响整个光学系统的成像质量。当前，在高精度空间相机反射镜组件的设计中，开始广泛采用胶结的方式来替代传统的机械紧固连接，反射镜组件一般由主反射镜和反射镜支撑结构胶结而成。反射镜组件在胶结过程中产生的粘结应力、温度的变化带来的热应力、重力的作用等是影响反射镜面形精度的主要因素，这些因素所带来的负面作用可以通过对支撑结构的合理设计以及胶结工艺的研究来得到解决，本文的工作正在于此。本文对口径为ϕ320mm的反射镜组件进行了设计，包括反射镜结构设计、反射镜支撑结构设计以及胶结工艺设计。针对不同的胶结方案，采用有限元与试验验证的方法，对比分析反射镜组件的结构刚度和反射镜的面形精度，得出合适的方案。本文主要开展了以下几个方面的工作： 1. 调研和分析国内外对反射镜支撑结构与胶结工艺的相关报道，总结出了中小口径反射镜支撑结构、大口径反射镜支撑结构、胶结工艺设计的一般步骤和方法； 2. 结合已有的反射镜设计方案以及前面总结的中小口径反射镜支撑结构设计的一般步骤，对反射镜、反射镜支撑结构进行了设计和改进； 3. 通过理论分析得到了六条均布粘胶和环带全粘胶两种粘胶方案的具体参数，并采用有限元与试验验证的方法，对两种方案进行了结构刚度分析和光学性能分析，结果显示六条粘胶方案更适用于ϕ320mm反射镜组件的粘结。 4. 对选定的反射镜组件方案的胶结可靠性进行分析。用Miles方法对反射镜组件在鉴定级与验收级随机振动条件下的随机应力峰值进行了求解，同时对反射镜组件进行了验收级和鉴定级随机振动试验，试验与分析结果表明，反射镜组件能通过验收级随机振动试验，满足设计和使用要求。
其他摘要	With the continuous development and innovation of space technology, spatial resolution of space camera becomes more and more high. Mirror components as one of the important components of space camera, the surface form precision of the mirror will directly affect the image quality of the optical system. Currently, in the design of high-precision space camera’s mirror components, more and more engineers widely adopted bonded way to replace the traditional mechanical fastening. Mirror components generally consists by bonding the mirror and mirror support structure. Bonding stress, thermal stress caused by temperature change, the force of gravity were the main factors affecting the surface form precision. The negative effects caused by these factors can be sloved by designing the support structure and bonding technology rationally. The work of this paper is to slove these problem. In this paper, the design of mirror components, whose caliber was ϕ320mm, was finished. It included the mirror design, the mirror support structure design and bonding technology. For different bonding technology, the finite element method and experimental verification were used to analyse the surface form precision of the mirror and the structure stiffness of the mirror components. From the analysis and experiment results, more appropriate design option can be achieved. In this paper, the work carried out mainly in the following several areas: 1. According to surveying and analyzing the mirror support structure and bonding technology reported at home and abroad, the general procedures and methods of mid-small-diameter mirror’s design, large-diameter mirror’s design, bonding technology’s design were summed up; 2. Refering to the existing method of mirror design and the general procedures of mid-diameter mirror’s design, the mirror and the mirror support structure were designed and improcement. 3. By theoretical analysis, specific bonding parameters of six bonds and round bonds were achieved. Then, the finite element analysis and experimental verification for two bonding options was carried out to analysis static stiffness and optical properties. The results indicated that the six bonds option is better for bonding the mirror whose caliber is near ∅320mm. 4. The bonding reliability of the selected mirror components were analyzed. On one hand, Miles method was used to slove the peak stress of random response under the acceptable random vibration condition and the critical random vibration condition. On the other hand, random vibration experiments under the acceptable and critical condition were conducted. Experiments’ data and analysis results show that the mirror components can bear the acceptable random vibration and meet the requirements.
语种	中文
文献类型	学位论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/49243
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	郭骏立. 视频相机反射镜组件结构设计及其胶结工艺研究[D]. 中国科学院大学,2015.

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