Abstract: In order to meet the demands of measuring vibration and shock testing machines, the measurement system is developed. The system is designed by measuring technology of virtual instrument. The system can measure the frequency and amplitude of the acceleration signal, analyse the signal by FFT and realize the measurement. The experimental results demonstrate that the system has several characters, such as perfect testing functions, accurate testing result and simple operation. The system can be used to calibrate all existing vibration and shock testing machines. This system had been used in practice.

Key words: Vibration, Shock, Measurement, Virtual instrument