Triaxial accelerometer sensitivity coefficient synchronous impact calibration method and device

The invention relates to a triaxial accelerometer sensitivity coefficient synchronous impact calibration method and device. The device mainly comprises a guide column, a rodless cylinder, a mounting seat, a falling platform, a brake mechanism, a sliding block, an encoder, a waveform generator, a base, a standard single-axis accelerometer, a mounting seat fixing bolt, a waveform generator fixing bolt, an air compressor and a dynamic data acquisition system. The method comprises the steps of installing a triaxial accelerometer to be calibrated, lifting a drop platform, carrying out drop impact, collecting data, solving an input acceleration, solving an input matrix and an output matrix, and calculating a sensitivity coefficient. According to the method, the main sensitivity coefficient and the inter-axis coupling sensitivity coefficient of the triaxial accelerometer can be obtained under the condition that each sensitive axis is subjected to the impact load at the same time; the device can excite the synchronou