Quasi-Static Calibration Method of a High-g Accelerometer

Sensors

Jinbiao Fan¹  Jing Zu²  Peng Xu²  Yan Wang² 

[1] School of Computer Science and Control Engineering, North University of China, Taiyuan 030051, China;Science and Technology on Electronic Test and Measurement Laboratory, North University of China, Taiyuan 030051, China;

关键词: quasi-static calibration;    high-g accelerometer;    pulse width;    gas gun;    laser interferometer;   

DOI  :  10.3390/s17020409

来源: DOAJ

【 摘 要 】

To solve the problem of resonance during quasi-static calibration of high-g accelerometers, we deduce the relationship between the minimum excitation pulse width and the resonant frequency of the calibrated accelerometer according to the second-order mathematical model of the accelerometer, and improve the quasi-static calibration theory. We establish a quasi-static calibration testing system, which uses a gas gun to generate high-g acceleration signals, and apply a laser interferometer to reproduce the impact acceleration. These signals are used to drive the calibrated accelerometer. By comparing the excitation acceleration signal and the output responses of the calibrated accelerometer to the excitation signals, the impact sensitivity of the calibrated accelerometer is obtained. As indicated by the calibration test results, this calibration system produces excitation acceleration signals with a pulse width of less than 1000 μs, and realize the quasi-static calibration of high-g accelerometers with a resonant frequency above 20 kHz when the calibration error was 3%.

【 授权许可】

Unknown