大型可展开天线型面热变形近景摄影测量

doi:10.3901/JME.2020.11.065

机械工程学报 ›› 2020, Vol. 56 ›› Issue (11): 65-71.doi: 10.3901/JME.2020.11.065

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大型可展开天线型面热变形近景摄影测量

黄桂平¹, 马开锋¹, 柏宏武², 马小飞², 王勇³

1. 华北水利水电大学测绘与地理信息学院郑州 450045;
2. 中国空间技术研究院西安分院西安 710000;
3. 郑州辰维科技股份有限公司郑州 450001

收稿日期:2019-06-27 修回日期:2019-11-21 出版日期:2020-06-05 发布日期:2020-06-12
作者简介:黄桂平,男,1973年出生,博士,副教授,硕士研究生导师。主要研究方向为大型结构与工程精密测量、工业摄影测量、大尺寸三维测量等。E-mail:huangguiping123@163.com
基金资助:
国家自然科学基金资助项目（51474217）。

Close-range Photogrammetry for Surface Thermal Deformation of Large-scale Deployable Antennas

HUANG Guiping¹, MA Kaifeng¹, BAI Hongwu², MA Xiaofei², WANG Yong³

1. College of Surveying and Geo-Informatics, North China University of Water Resources and Electric Power, Zhengzhou 450045;
2. China Academy of Space Technology(Xi'an), Xi'an 710000;
3. Zhengzhou Chenway Technology Co. Ltd., Zhengzhou 450001

Received:2019-06-27 Revised:2019-11-21 Online:2020-06-05 Published:2020-06-12

摘要/Abstract

摘要： 为确保高精度可展开天线的在轨性能，验证设计、材料和工艺的可靠性，提出采用数字近景摄影测量技术在地面模拟环境下对可展开天线型面进行热变形测试。设计了人工测量与自动测量两种方案，主要采取了高低温环境下相机防护、耐高低温测量标志和极低膨胀长度基准尺等措施保证了大温差极端环境下的测量实施。结果表明，天线型面精度随温度的变化而变化，且三个测量循环的变化规律较为一致，均在+60℃温度节点时型面精度最差，其均方根误差（RMS）最大值达到了0.220 mm （人工测量），但也满足了天线型面精度小于0.5 mm的技术设计指标要求。对于40℃和80℃的温差时，人工测量型面变形量的RMS分别为0.045 mm和0.083 mm，也分别满足了其天线型面变形量技术设计指标0.100 mm和0.150 mm的要求。同时验证了自动测量与人工测量测量结果的一致性，均能满足测量技术设计指标的要求，为高低温测量试验的自动化实现提供了一种可拓展性思路。

关键词: 近景摄影测量, 型面热变形, 可展开天线, 高低温环境

Abstract: In order to ensure the on-orbit performance of high-precision deployable antennas and verify the reliability of design, materials and processes, a digital close-range photogrammetry technique is proposed to test the thermal deformation of the deployable antenna surface in the ground simulation environment. Two methods including artificial and auto were used to measure the antenna. Several corrective actions were proposed and made, such as camera protection can, low-high temperature targets and extremely low expansion glass scale-bar. The test results show that the surface precision of the antenna varies with the change of temperature, and the variation law of the three measurement cycles is consistent. The surface precision of the antenna is the worst at the temperature node of +60 ℃, and the maximum value of the root mean square (RMS) reaches 0.220 mm (manual measurement). However, it also meets the technical design requirements of antenna surface precision of less than 0.5 mm. For the temperature difference of 40 ℃ and 80 ℃, the RMS of the surface deformation of the antenna measured manually is 0.045 mm and 0.083 mm, respectively, which also meets the requirements of the technical design index 0.100 mm and 0.150 mm for the surface deformation of the antenna. At the same time, it is verified that the measurement results of automatic measurement and manual measurement are consistent, both of them can meet the requirements of measurement technical design, and provide an extensible idea for the automation of high-low temperature measurement experiments.

Key words: close-range photogrammetry, surface thermal deformation, deployable antenna, high-low temperature

中图分类号:

P234

黄桂平, 马开锋, 柏宏武, 马小飞, 王勇. 大型可展开天线型面热变形近景摄影测量[J]. 机械工程学报, 2020, 56(11): 65-71.

HUANG Guiping, MA Kaifeng, BAI Hongwu, MA Xiaofei, WANG Yong. Close-range Photogrammetry for Surface Thermal Deformation of Large-scale Deployable Antennas[J]. Journal of Mechanical Engineering, 2020, 56(11): 65-71.

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大型可展开天线型面热变形近景摄影测量

Close-range Photogrammetry for Surface Thermal Deformation of Large-scale Deployable Antennas

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