In order to meet the requirements of wide-band,wide-range and non-contact field calibration of MHD micro angular vibration sensor,a field calibration method based on D-LDV is proposed.And the working principle and flow of the calibration system are described.Field calibration simulation experiment is carried out,and the main performance indexes of the sensor in 25 Hz～1500 Hz are obtained.The experimental results show that the proposed method can accurately calibrate the complex sensitivity parameters of the sensor,the nonlinear error is 0.091%,the maximum repeatability error is 0.54% and 0.33°,and the extended uncertainty of the sensitivity amplitude and phase shift measurement in the test band are 1.42% and 0.672°(k=2)respectively,which meets the requirements of wide-band and wide-range field calibration of MHD micro-angle vibration sensors.
万方数据
维普
