| Summary: | 碩士 === 國立中央大學 === 光機電工程研究所 === 105 === The study improved and optimized a prime mirror system which was used in a remote sensing instrument (RSI), including the lightweight design of the mirror and its flexure mount. Computer-aided design software was used to build the model. The model was imported to the finite element software to analyze. The opto-mechanical program was used to get the optical performance of the system. The optimization process included two part, lightweight mirror design and the design of the flexure mount. For the lightweight mirror design, the goal was to make the mirror being lightest while maintaining both the optical quality and mechanical rigidity. For the flexure mount design, the purpose was to determine the optimum parameter of the flexure mount which made the mirror system performance best. This study used two optimization algorithm, including gradient descent and genetic algorithm. Finally, the mass reduction ratio of the lightweight mirror was 77% and the optical PV (Peak-to-valley) value of the prime mirror system was 49nm under gravity.
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