YNAO OpenIR  > 天体测量及应用研究组
Thesis Advisor陈林飞
Degree Grantor中国科学院研究生院(云南天文台)
Place of Conferral北京
Degree Discipline天文技术与方法
Keyword机械设计 Ynst 有限元方法 结构优化设计
Abstract多波段光谱仪是云南一米太阳望远镜的重要附属设备,可进行高精度的多波段光谱成像。本文的工作是焦面系统平台(多波段光谱仪的重要组成部分)的机械结构设计。 本文介绍了云南一米太阳望远镜多波段光谱仪焦面系统的作用与意义,介绍并分析了焦面系统各个元件的功能与设计要求,给出了机械结构方案及设计结果。 焦面系统的主要元件包括狭缝、场镜、平面反射镜、光栅以及CCD。因此各个元件的安装夹持结构设计以及系统平台的结构设计构成了本文的主要内容。其中,重点是平面反射镜的夹持设计和系统平台的结构优化。 平面反射镜采用半运动学安装结构,由于平面反射镜的表面变形应小于1/10波长,因此平面反射镜的夹持位置显得非常重要。本文借助有限元方法计算了多组夹持位置下平面反射镜的应力与变形,并据此选定了最终的夹持位置。 为保证在使用和调试中系统平台的变形不影响调试和使用,系统平台应具有足够的刚度。本文利用COSMOSWorks的优化功能对平台的结构进行了优化。结果表明,优化后的平台板与初始设计的简单平板相比,刚度大大增加,而重量较轻。 焦面系统零件已经加工完毕,正在进行组装调试。
Other AbstractMulti-band spectrometer is an important ancillary equipment of Yunnan one meter Solar Telescope, capable of getting highly precise multi-band spectral imaging. The mechanical structure of focal plane platform (important part of the multi-band spectrometer) was designed in this paper. This paper describes the role and significance of the multi-band spectrometer focal plane system of the one-meter Solar Telescope in Yunnan Province. This study offers an introduction to, and analysis of, the functions and design requirements of various components of the focal plane system, and the design programs and the results are provided. The focal plane system’s components include the slit, field lens, plane mirror, grating and CCD. Therefore, the structure design of various clamping device and system platform are the focus of this study. Among them, the focus plane of the reflector tackling the structural design and optimization platform. The emphasis is on the clamping device design of plane mirror and structural optimization of the system platform. Semi-kinematic installation structure is employed in the installation of the plane mirror. The surface distortion of the plane mirror should be confined to be less than 1 / 10 wavelength, so the position of the gripping plane mirror is very essential. With the help of finite element method, the author calculated the Stress and the deformation of the flat mirror in the multiple clamping position, and accordingly selected the final clamping position. To ensure that, in the application and the debug of the system, the deformation does not affect the platform, the system platform itself should have sufficient rigidity. In this paper, COSMOSWorks is employed to optimize the structure function of the platform. The results show that, compared with the simple flat, the stiffness of the optimized one is significantly increased, and the weight is lighter as well. Focal plane processing system components have been completed, assembly debug is under examination.
Subject Area天文学
Document Type学位论文
Recommended Citation
GB/T 7714
程向明. YNST光谱仪焦面系统机械设计[D]. 北京. 中国科学院研究生院(云南天文台),2010.
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