Thanks for the help again. I think this will help. Your responses
have been great.
If you only need to integrate the spectrum, you can generate a scaling
array to multiply the output of the FFT. Assuming your FFT output is
magnitude (as opposed to power) and linearly scaled (as opposed to
dB), the scaling array looks like the following for single
integration:
[0, 1/w_1, 1/w_2, .
Thanks for the info. I can use all the help I can get.
Integration typically acts as a lowpass filter. For mechanical
vibrations, you should make sure that your acquired signal is AC
coupled or that you remove any DC component from the signal to
integrate as this DC component will dominate the response and you will
see a net displacement after integrat
Thanks Stu, I'll give it a try
first convert your raw acceleration units to ft/sec/sec (or whatever
unit you want velocity and displacement) Then use the integrate
function (twice for displacement). You may use FFT for frequency
content but it does not help for velocity or displacement. If you
have already tried this, you may
using lv 6.1 without sound and vibration tool kit. how do you integrat
a vibratory spectrum from acceleration to velocity and displacement.
I'm using the real fft lv function and displaying with a waveform
chart.
