Research on Dynamic Calibration Technology of Shock Accelerometer Based on Model Method

Abstract

High-g shock accelerometers usually use model-based dynamic calibration to obtain their dynamic characteristics. Starting from the dynamic calibration technology chain, a different model linearization algorithm from ISO16063-43 is used for accelerometer model establishment and parameter identification, and the Monte Carlo method is used to calculate the uncertainty of model parameters. In order to verify the proposed method, simulated signals were constructed under different shock excitation amplitudes, and the parameter identification and uncertainty evaluation were done on the simulated signals to verify the proposed algorithm. At the same time, the algorithm is tested by using the actual shock accelerometer calibration signal. The results show that the algorithm has achieved good results without increasing the amount of calculation, and has practical significance for the dynamic calibration of accelerometers and other sensors in practical engineering applications.