Parametric design and test of flexible support for mirror of single trans optical terminal

被引：0
|
作者：
Li X. [1 ,2 ]
Wang G. [1 ]
Zhang L. [1 ,2 ]
Wang T. [1 ]
Zhang T. [1 ]
机构：
[1] National and Local Joint Engineering Research Center of Space and Optoelectronics Technology, Changchun University of Science and Technology, Changchun
[2] Institute of Mechanical Engineering, Changchun University of Science and Technology, Changchun
来源：
Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering | 2020年 / 49卷 / 04期
关键词：
Flexible support; Laser communication; Mirror; Orthogonal optimization; Parametric design;
D O I：
10.3788/IRLA202049.0414003
中图分类号：
学科分类号：
摘要：
In order to ensure the surface accuracy of the Pointing, Acquisition and Tracking (PAT) mirror in the harsh space environment, a flexible support structure with grooves on the bottom was designed. Due to the large number of parameters of flexible support structure, in order to avoid serious coupling between parameters, the orthogonal optimization method was used to optimize the parameters of flexible support structure, and then the finite element method was used to analyze the mechanical and thermal characteristics of mirror components. The simulation results show that the first-order frequency of the mirror module is 352.61 Hz, and the maximum surface error RMS under the combined action of 1 g gravity and 10℃ temperature rise (temperature drop) is λ/54.79(λ=632.8 nm), which can satisfy the dynamic and static stiffness and thermal dimensional stability. The ZYGO interferometer is used to detect the mirror surface shape in the temperature range of (20±10)℃. The results show that the PV value of the mirror surface is better than λ/6, and the RMS is better than λ/43, which meets the requirement of RMS≤λ/40. The experimental results show that the design of flexible support parameters is reliable and meets the application requirements. © 2020, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.
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