A novel implementation of homodyne time interval analysis method for primary vibration calibration

Qiao Sun; Ling Zhou; Chenguang Cai; Hongbo Hu

doi:10.1117/12.905077

15 November 2011 A novel implementation of homodyne time interval analysis method for primary vibration calibration

Qiao Sun, Ling Zhou, Chenguang Cai, Hongbo Hu

Author Affiliations +

Proceedings Volume 8321, Seventh International Symposium on Precision Engineering Measurements and Instrumentation; 83212K (2011) https://doi.org/10.1117/12.905077
Event: Seventh International Symposium on Precision Engineering Measurements and Instrumentation, 2011, Yunnan, China

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.

Citation Download Citation

Qiao Sun, Ling Zhou, Chenguang Cai, and Hongbo Hu "A novel implementation of homodyne time interval analysis method for primary vibration calibration", Proc. SPIE 8321, Seventh International Symposium on Precision Engineering Measurements and Instrumentation, 83212K (15 November 2011); https://doi.org/10.1117/12.905077

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