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4 m SiC主镜硬点定位机构指标性能分析

Performance analysis of hardpoint positioning mechanism for 4 m SiC primary mirror

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摘要

为了保证4 m SiC主镜的位姿精度和支撑系统的刚度, 根据主镜支撑系统的光学指标对六杆硬点定位机构的相关参数指标进行了分析。应用有限元方法并借助于有限元软件, 对六杆硬点定位机构进行了优化设计, 确定了硬点分布半径、定位夹角、轴向刚度和轴向拉压力极限。分析计算出在主镜背部半径为1 345 mm的圆周上, 均匀分布六个硬点机构连接点时, 单个硬点轴向刚度达到15 000 N/mm。此时, 主镜支撑系统的固有频率大于等于15 Hz, 满足设计要求, 为后续结构的优化设计提供了依据。

Abstract

In order to ensure the position accuracy and the stiffness of the support system for the 4 m SiC primary mirror, the parameters of hardpoints in a hexapod configuration were analyzed according to the optical indexes of the primary mirror support system. Using the finite element method, the hardpoint positioning mechanism was optimized. The hardpoint distribution radius, positioning angle, axial stiffness and the limit of axial tension and compression were determined by the finite element software. The analysis results show that six hardpoints should be equally distributed at 1 345 mm of the radius on the circumference in the primary mirror backface. When the axial stiffness of the hardpoint reaches 15 000 N/mm, the natural frequency of the primary mirror support system is greater than or equal to 15 Hz. It can meet the design requirements and provide the basis for the following design optimization.

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中图分类号:TH751

DOI:10.3788/irla201948.0418004

收稿日期:2018-12-01

修改稿日期:2018-12-24

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魏梦琦:中国科学院长春光学精密机械与物理研究所, 吉林 长春 130033中国科学院大学, 北京 100049
吴小霞:中国科学院长春光学精密机械与物理研究所, 吉林 长春 130033
高则超:中国科学院长春光学精密机械与物理研究所, 吉林 长春 130033中国科学院大学, 北京 100049
王 瑞:中国科学院长春光学精密机械与物理研究所, 吉林 长春 130033中国科学院大学, 北京 100049

联系人作者:魏梦琦(weimengqi0620@163.com)

备注:魏梦琦(1994-), 女, 硕士生, 主要从事光机系统结构设计与分析方面的研究。

【1】Wang Shuai, Deng Yongting, Zhu Juan. Disturbance rejection control for large ground-based telescope[J]. Optics and Precision Engineering, 2017, 25(10): 2627-2635. (in Chinese)

【2】Yan Conglin. Design and analysis for the support structure of large aperture rectangular mirror[D]. Chengdu: Institute of Optics and Electronics, Chinese Academy of Sciences, 2013. (in Chinese)

【3】Li Jianfeng, Wu Xiaoxia, Shao Liang. Study on active support for large SiC primary mirror and force actualtor design[J]. Infrared and Laser Engineering, 2016, 45(7): 0718003. (in Chinese)

【4】Zhao Yongzhi, Shao Liang, Ming Ming, et al. Assembly for large aperture telescope primary mirror support system[J]. Infrared and Laser Engineering, 2017, 46(9): 0918003. (in Chinese)

【5】Wang Huai, Dai Shuang, Wu Xiaoxia. Shafting structure design in a 600 mm thin mirror active optics telescope[J]. Infrared and Laser Engineering, 2015, 44(4): 1260-1266. (in Chinese)

【6】Peng Yao, Zhang Jingxu, Yang Fei, et al. Hardpoint location technique of large mirror based on active optics[J]. Laser & Infrared, 2016, 46(2): 139-144. (in Chinese)

【7】Ma Jiayi. Singularity analysis of six degrees of freedom of parallel manipulators using geometric algebra[D]. Hangzhou: Zhejiang Sci-Tech University, 2017. (in Chinese)

【8】Neill D, Angeli G, Clever C, et al. Overview of the LSST active optics system [C]//SPIE, 2014, 9150: 91500G.

【9】Lan Bin, Yang Hongbo, Wu Xiaoxia, et al. Optimal design of Φ620 mm ground mirror assembly[J]. Infrared and Laser Engineering, 2017, 46(1): 0118001. (in Chinese)

引用该论文

Wei Mengqi,Wu Xiaoxia,Gao Zechao,Wang Rui. Performance analysis of hardpoint positioning mechanism for 4 m SiC primary mirror[J]. Infrared and Laser Engineering, 2019, 48(4): 0418004

魏梦琦,吴小霞,高则超,王 瑞. 4 m SiC主镜硬点定位机构指标性能分析[J]. 红外与激光工程, 2019, 48(4): 0418004

被引情况

【1】高则超,郝 亮,王富国,张丽敏,王 瑞,范 磊. 2 m级望远镜主动调节侧向支撑机构设计与优化. 红外与激光工程, 2019, 48(8): 814001--1

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