基于正弦激励的压电加速度计模型参数辨识

doi:10.3969/j.issn.1000-1158.2020.01.11

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Abstract A novel approach was proposed for calibration of accelerometers by model-based parameter identification, aimed for the problem that mostly used method for accelerometers calibration cant satisfy requirements for dynamic mechanical quantity in reality. The model consisted of a linear, second-order differential equation with unknown coefficients. It was proposed to estimate these model parameters from primary vibration calibration, and an estimation procedure based on linear least-squares was presented. The uncertainties associated with the estimated results were determined utilizing a Monte Carlo simulation technique. The model obtained was used to predict the accelerometers behavior for shock acceleration, measured and predicted results were consistent with difference below 1%, which confirmed the validity of the method.

Key words： metrology accelerometer primary vibration calibration dynamic characteristics least-squares method Monte Carlo method

Received: 16 July 2018 Published: 19 December 2019

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TB936

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	LU Min
	HU Hong-bo

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LU Min,HU Hong-bo. Calibration of Piezoelectric Accelerometers Dynamic Characteristics using Primary Vibration Calibration[J]. Acta Metrologica Sinica, 2020, 41(1): 55-59.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2020.01.11 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2020/V41/I1/55

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