A method based on exact constraint for supporting space-based large mirror with a diameter of 2.8m

Wang, Zhongshan; Zhang, Jingxu; Wang, Jixin; He, Xiyun; Fu, Liangliang; Tian, Fei; Liu, Xiaofeng; Zhao, Yuchen

doi:10.1016/j.ijleo.2018.09.108

Cited by 1 publication

(1 citation statement)

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“…To achieve an accurate surface form and optical axis stability of a large aperture lens in a ground-based telescope system subject to various load cases, Zhang et al, proposed a novel lens support with a multi-point flexible support structure and based on low-order modes and system accuracy to optimize its supporting structure [24]. Wang et al designed a tangential flexible support structure and an axial flexible support structure to compensate for temperature and gravity load disturbances on a large-aperture optical mirror [25]. The above-mentioned scholars have carried out a substantial amount of research on the support systems of optical mirrors.…”

Section: Introductionmentioning

confidence: 99%

Multi-Objective Parameter Optimization of Flexible Support System of Optical Mirror

Jin

Pang

et al. 2021

Applied Sciences

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During the processing of an optical mirror, the performance parameters of the bottom support system would affect the surface forming accuracy of the mirror. The traditional bottom support system has a large unadjustable support stiffness, which increases the difficulty of unloading the impact force generated by the grinding disc. In response to this scenario, a flexible support system (FSS) consisting of 36 support cylinders with beryllium bronze reeds (BBRs) and rolling diaphragms (RDs) as key components is designed. It is necessary to analyze the key components of the support cylinder to reduce its axial movement resistance, ensure a consistent force output of each support point. First, the internal resistance model of a flexible support cylinder is established, and the main factors of internal resistance are then analyzed. Thereafter, the multi-objective structural parameters of the BBR and RD are simulated in ANSYS using the control variable method. The optimal structural parameters of BBR and RD are determined by simulation. Finally, experiments are performed on the RD ultimate pressure, internal resistance of the support cylinder, and consistency of the force output of the FSS. The experimental results show that the support cylinder with the optimized design has good force output consistency, which provides a theoretical basis for the application of FSS in optical mirror processing.

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Section: Introductionmentioning

confidence: 99%