Research on Dynamic Amplitude Calibration of Laser Displacement Sensor
Aiming at the problems of low accuracy and large calibration limitations in the calibration of laser displacement sensors,this paper proposes a dynamic amplitude calibration method for laser displacement sensors.The calibration method first uses the electromagnetic shaking table to excite the standard structural parts for magnitude amplification to generate a large displacement amplitude at a specific high frequency;then,the displacement measured by the laser vibrometer based on Doppler effect is used as the standard quantity to calibrate the dynamic amplitude of the laser displacement sensor.Finally,the displacement amplitude calibration at different frequencies is experimentally studied through a series of standard structural components with different resonance frequencies.The research results show that compared with the existing technology,the dynamic amplitude calibration method of laser displacement sensor proposed in this paper can accurately calibrate the dynamic amplitude of laser displacement sensor at different frequencies,which is of great value to the practical application of engineering.
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维普
