衛載遙測取像儀反射鏡加工缺陷檢測與最佳光學成像品質之運動學裝配設計;Detection of grinding defect and the optimum design of kinematic mount for a primary mirror of a space-born remote sensing instrument

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题名:	衛載遙測取像儀反射鏡加工缺陷檢測與最佳光學成像品質之運動學裝配設計;Detection of grinding defect and the optimum design of kinematic mount for a primary mirror of a space-born remote sensing instrument
作者:	范綱傑;Fan,Gang-jie
贡献者:	機械工程學系
关键词:	光機整合分析;有限元素法;田口法;像散;調制轉換函數;光彈法;次表層破壞;殘留應力;Zernike多項式
日期:	2012-10-23
上传时间:	2012-11-12 14:38:07 (UTC+8)
出版者:	國立中央大學
摘要:	本文主要研究對象為遙測取像儀之反射鏡加工與裝配，旨在探討加工與裝配對反射鏡光學品質之影響。加工缺陷檢測主要以殘留應力與次表層破壞為主，本研究利用不同粒徑之鑽石刀具，分別在試片上研磨，再以不同儀器觀察表面之殘留應力與次表層破壞，得到刀具粒徑對此兩種加工缺陷之影響。一般光學分析流程中，不易計入運動學裝配與鏡片變形所降低的光學品質，本研究建立一套光機分析流程，整合有限元素與曲面擬合方法，能將主鏡受力產生之變形匯入光學軟體進行分析，模擬實際運作情況下之光學品質。利用此一流程，分析運動學裝配貼合位置對主鏡光學品質之影響，並找出具最佳品質之貼合位置；另外，此流程亦搭配田口法進一步改良裝配參數，使其對主鏡成像影響能降至最低。This study investigates the effect of machining defects and the optimum mounting on a primary mirror of a remote sensing instrument. Processing defects discussed here are residual stress and subsurface damage. The specimens are ground by diamond tools with different grain-sized, and the effects of grain size of the grinding tool on the residual stress and subsurface damage are investigated.Generally, optical simulation process does not consider the degraded optical performance caused by the deformations of mounting and mirror. This research established an opto-mechanical analysis process to integrate finite element analysis and surface fitting. After fitting, the data of the deformed primary mirror can be imported into optical simulation software to analyze its real optical performance. Based on the integrated opto-mechanical analysis, the best position to glue the kinematic mount and the primary mirror is determined. Furthermore, Taguchi method is adopted to determine the design parameters of the kinematic mount for the primary mirror which will yield a best optical performance.
显示于类别:	[機械工程研究所] 博碩士論文

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