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Proceedings Paper

A novel implementation of homodyne time interval analysis method for primary vibration calibration
Author(s): Qiao Sun; Ling Zhou; Chenguang Cai; Hongbo Hu
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Paper Abstract

In this paper, the shortcomings and their causes of the conventional homodyne time interval analysis (TIA) method is described with respect to its software algorithm and hardware implementation, based on which a simplified TIA method is proposed with the help of virtual instrument technology. Equipped with an ordinary Michelson interferometer and dual channel synchronous data acquisition card, the primary vibration calibration system using the simplified method can perform measurements of complex sensitivity of accelerometers accurately, meeting the uncertainty requirements laid down in pertaining ISO standard. The validity and accuracy of the simplified TIA method is verified by simulation and comparison experiments with its performance analyzed. This simplified method is recommended to apply in national metrology institute of developing countries and industrial primary vibration calibration labs for its simplified algorithm and low requirements on hardware.

Paper Details

Date Published: 15 November 2011
PDF: 6 pages
Proc. SPIE 8321, Seventh International Symposium on Precision Engineering Measurements and Instrumentation, 83212K (15 November 2011); doi: 10.1117/12.905077
Show Author Affiliations
Qiao Sun, National Institute of Metrology (China)
Ling Zhou, FOTON Environmental Engine Co. Ltd. (China)
Chenguang Cai, National Institute of Metrology (China)
Hongbo Hu, National Institute of Metrology (China)


Published in SPIE Proceedings Vol. 8321:
Seventh International Symposium on Precision Engineering Measurements and Instrumentation
Kuang-Chao Fan; Man Song; Rong-Sheng Lu, Editor(s)

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