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| Research on the Method of the Triaxial Primary Vibration Calibration Using the Heterodyne Interferometry |
| YANG Ming1,CAI Chen-guang2,LIU Zhi-hua2,WANG Ying1 |
1. Beijing University of Chemical Technology, Beijing 100029, China
2. National Institute of Metrology, Beijing 100029, China |
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Abstract Compared with the one-axial vibration excitation in the traditional calibration method, the triaxial standard vibration exciter can simulate the actual application environment of the calibrated accelerometer. The spatial response characteristic of the accelerometer can be obtained by using the triaxial standard vibration exciter to realize the accurate calibration of the accelerometer. The sensitivity matrix model of the triaxial accelerometer was proposed which used the bandpass based on heterodyne interferometry triaxial primary vibration calibration method and the theory of the acceleration vector. This method realizes the calibration of the accelerometer by calculating its sensitivity matrix. The experimental results show that this method can simultaneously realize the high precise calibration of the principal and the transverse sensitivities of the triaxial accelerometer, and this method can effectively reduce the calibration time and the error caused by the repetitive installations.
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Received: 31 October 2017
Published: 11 February 2018
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2018, Vol. 39 
