关键词: 标定, 冲击传感器, 脉宽, 安装谐振频率

Abstract: Different pulse widths produce different results in the process of calibrating the piezoelectric shock sensor. The main reason is that the pulse width impact frequency is in the amplification area of the frequency response of the sensor installation. Different pulse widths have different amplification effects after acting on the sensor, resulting in different calibration results. The shock sensor is calibrated separately by air gun and Hopkins rod, and the difference between the calibration results is analyzed. The qualitative analysis of the progressivity of the frequency response curve of the sensor installation is consistent with the fact that the difference of impulse pulse width leads to different calibration results. The specific measures for the fixed pulse width control in the calibration process are put forward, which has guiding significance for the correct calibration of the shock sensor.

Key words: Calibration, Shock sensor, Pulse width, Mounting resonant frequency