Volume 66 Issue 4
Jun.  2022
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LV Qi, WANG Junbo, ZHANG Ying, LIU Zhihua, XIA Yan, CAI Chenguang. Design Study on the Measurability of Low-Frequency Standard Shaker[J]. Metrology Science and Technology, 2022, 66(4): 101-107, 88. doi: 10.12338/j.issn.2096-9015.2021.0675
Citation: LV Qi, WANG Junbo, ZHANG Ying, LIU Zhihua, XIA Yan, CAI Chenguang. Design Study on the Measurability of Low-Frequency Standard Shaker[J]. Metrology Science and Technology, 2022, 66(4): 101-107, 88. doi: 10.12338/j.issn.2096-9015.2021.0675

Design Study on the Measurability of Low-Frequency Standard Shaker

doi: 10.12338/j.issn.2096-9015.2021.0675
  • Accepted Date: 2022-04-08
  • Available Online: 2022-04-22
  • Publish Date: 2022-06-02
  • The low-frequency standard shaker is the main component of the low-frequency vibration standard device, and its measurement performance directly affects the measurement uncertainty of low-frequency vibration calibration. By carrying out the design and research on the measurability of the low-frequency standard shaker, the ability of the metrology guarantee can be improved. Based on the functional analysis of low-frequency standard shakers, this paper analyzes three typical measurement scenarios of low-frequency standard shakers, including type test, conventional use, and periodic measurement, and composes and extracts three key measurement parameters and relevant requirements as the measurable requirements, including transverse vibration ratio, acceleration harmonic distortion, and frequency indication error, and then carries out the measurable design and verification. Given the large distortion of the low-frequency accelerometer in low-frequency calibration, a grating-based measurement method is proposed. The measurement interface and method of the grating are designed by using the measurable design method, which effectively improves the convenience and accuracy of distortion measurement. The measurability design method and the process can provide a reference for the measurability design of other verification and calibration devices.
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