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Proceedings Paper

Laser displacement sensor optimization for space structure vacuum thermal test
Author(s): Chao Fan; Wen Gao; Yanqiang Bi; Jing Wang; Boying Lin; Xiyuan Li; Guoqing Liu
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Paper Abstract

The large spacecraft structure would generate thermal-induced vibration in orbit under specific condition, which will affect the performance of the payload. In order to predict the occurrence of thermal-induced vibration of the spacecraft structure in orbit, it is necessary to carry out tests in the ground simulated vacuum and low temperature environment. The vibration displacement of structure should be measured by laser displacement meter during the test. Due to the special environment such as vacuum, low temperature environment, it is necessary to improve the laser displacement meter. The effect of internal and external pressure difference during pumping is eliminated by design the venting holes. Ensures the temperature uniformity and operating temperature range of the laser displacement meter by thermal control design, to reduce the measurement error caused by the thermal deformation of the sensor. The adaptive design ensures that the laser displacement meter can work normally under vacuum and low temperature environment, and the measurement accuracy is better than 5μm.

Paper Details

Date Published: 12 March 2020
PDF: 8 pages
Proc. SPIE 11439, 2019 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems, 114390L (12 March 2020); doi: 10.1117/12.2542949
Show Author Affiliations
Chao Fan, Beijing Institute of Spacecraft Environment Engineering (China)
Wen Gao, Beijing Institute of Spacecraft Environment Engineering (China)
Yanqiang Bi, Beijing Institute of Spacecraft Environment Engineering (China)
Jing Wang, Beijing Institute of Spacecraft Environment Engineering (China)
Boying Lin, Beijing Institute of Spacecraft Environment Engineering (China)
Xiyuan Li, Beijing Institute of Spacecraft Environment Engineering (China)
Guoqing Liu, Beijing Institute of Spacecraft Environment Engineering (China)


Published in SPIE Proceedings Vol. 11439:
2019 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems
Jigui Zhu; Kexin Xu; Hai Xiao; Sen Han, Editor(s)

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