Impact response measurement of an accelerometer

The zero-crossing averaging method (ZAM), which was originally developed for improving the measurement accuracy of force by means of the levitation mass method (LMM), is applied for evaluating the impact response of accelerometers. In the ZAM, the moment of the zero-crossing point is calculated as the average of many adjacent zero-crossing points and then the frequency is calculated. In this paper, the impulse response of an accelerometer is evaluated with high resolution and high sampling rate by means of the ZAM. The present status and future prospects of the ZAM as a method for use in calibration of accelerometers are discussed.