We are using LabVIEW but don't have the DAQ card for acceleration measurement from the accelerometer. Because of that we cannot able to measure acceleration vs time directly from the accelerometer, especially for random vibration.

1) We are giving inputs to the base exciter as frequency and voltage amplitude from the function generator.

2) Then the output voltage response of the beam is measured using DSO, no problem in that.

3) The acceleration vs time plot of the base exciter not able to produce from that, because of the applied amplitude is in terms of voltage. So we are getting the response of the base exciter is also in terms of voltage in some millivolts. That is the output voltage reading.

Using the sensitivity formula of accelerometer

Acceleration (g)=(Output reading (mV)-Zero output (mV))/(Sensitivity (mV/g)) is calculated for particular frequency and particular voltage amplitude.

In most of the literature papers, the acceleration is kept constant and doing an experiment. But in my case, the output voltage reading keeps on changing, so that acceleration is also changing. Not able to keep the constant acceleration as given in the literature.

In this message, the image file of the paper is attached for your reference.

Kindly tell me if somebody know anything about this problem. It will be useful for my research.