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Proceedings Paper

Application of laser sensors for on-line calibration of displacement transducers
Author(s): Jing Xie; Hong-tang Gao; Xiao-you Ye; Feng-qiang Gu; Dong-sheng Li
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Paper Abstract

On-line calibration is widely used no matter in science research or industrial production. In this paper, an on-line calibration approach for industrial displacement transducers has been developed. We used laser displacement sensor as standard and improved its accuracy to meet the requirements in different applications. In order to achieve the objective, laser sensor must be calibrated by automatic interference comparator. Laser sensor and automatic interference comparator measured the same displacement simultaneously and obtained the laser displacement sensor's calibration curve by analyzing the measurement data. Then the on-line calibration system including mechanical device and calibration platform was developed with the calibrated laser sensor. Numerous factors, such as verticality, colors, reflector material and vibration, contribute to errors in the compact laser displacement sensor measurements under field conditions. Analyzing the data obtained from the device's application of air spring system in automatic interference comparator, the presented paper outlines the error compensation methods and mathematical model. Experimental results show that laser sensor on-line calibration system can solve factory calibrating problems with accuracy requirement over 0.3%.

Paper Details

Date Published: 31 December 2010
PDF: 8 pages
Proc. SPIE 7544, Sixth International Symposium on Precision Engineering Measurements and Instrumentation, 75445U (31 December 2010); doi: 10.1117/12.885299
Show Author Affiliations
Jing Xie, National Institute of Metrology (China)
China Jiliang Univ. (China)
Hong-tang Gao, National Institute of Metrology (China)
Xiao-you Ye, National Institute of Metrology (China)
Feng-qiang Gu, National Institute of Metrology (China)
Dong-sheng Li, China Jiliang Univ. (China)

Published in SPIE Proceedings Vol. 7544:
Sixth International Symposium on Precision Engineering Measurements and Instrumentation
Jiubin Tan; Xianfang Wen, Editor(s)

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