温度条件对大尺寸测量装置精度影响的研究

doi:10.3969/j.issn.1000-1158.2019.06.06

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Abstract Large-scale measuring device has a wide measuring range, the measurement accuracy of the device is affected by many factors, among them, the change of the environmental conditions of the large size measuring device will affect its measurement accuracy. Based on the indoor 80m length standard device of National Institute of Metrology, China, the measurement accuracy experiment of 10m, 30m, 70m in the air conditioning temperature control state and natural temperature state (not controlled temperature) were designed to study, the refractive index compensation errors in the air-conditioning temperature control state were 7.0μm, 10.5μm, and 21.0μm, and the refractive index compensation errors in the natural temperature state were 2.5μm, 2.9μm, and 3.9μm respectively. The experimental results show that the large-scale measuring device can obtain higher measurement accuracy under natural conditions, and when the measuring range is greater than 30m, the measurement accuracy can be better than 10^-7 magnitude.

Key words： metrology large size measuring device laser interferometer refractive index compensation temperature condition measurement accuracy

Received: 14 December 2018 Published: 10 October 2019

PACS:

TB921

Corresponding Authors: Jian-Shuang LI E-mail: lijiansh@nim.ac.cn

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	LI Ting
	LI Jian-shuang
	MIAO Dong-Jing
	LI Lian-Fu
	LIU Xue-de

Cite this article:

LI Ting,LI Jian-shuang,MIAO Dong-Jing, et al. Study of Temperature States Influence on the Accuracy of Large Size Measuring Devices[J]. Acta Metrologica Sinica, 2019, 40(6): 975-979.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2019.06.06 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2019/V40/I6/975

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