Dynamic characteristic analysis of high-g accelerometersbased on Hopkinson bar

Based on Hopkinson bar laser interference shock test-beds, this paper analyzed the dynamic characteristics of high-g acceleration sensors, discussed the concept and feasibility to achieve the amplitude-frequency characteristics of a high-g accelerometer. This method adopted Hopkinson bar as the shock acceleration generator, applied a laser-grating interferometer to obtain the time history of the input acceleration with high accuracy, and processed the waveform combining with the output of accelerometer to obtain the dynamic calibration results. The dynamic calibration result of 988 piezoelectric sensors was given.