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Is there anyway to convert vibration acceleration data into velocity ?

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Ella
Ella on 28 Nov 2015
Edited: sercan demirkiran on 14 Dec 2017
How can I convert the vibration acceleration data collected in real time to velocity ? I know the relation is to integrate the data but my system requires real time velocity monitoring. I appreciate your reply.
Thanks in advance

Accepted Answer

Ella
Ella on 20 Dec 2015
I already found the answer so I'll just post here if anyone need.
velocity = cumtrapz(acceleration-mean(acceleration));
-- The acceleration signal is subtracted from its mean() value in order to remove the DC components and prevent the unnecessary ramp in the velocity signal.
-- cumtrapz() Matlab function is used to integrate the acceleration data in real time using trapezoidal rule.

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sercan demirkiran
sercan demirkiran on 14 Dec 2017
Hello Ella,
I would like to ask how it worked. Because, My data is random vibration data which is acquired on a bearing. When I applied your method 'velocity = cumtrapz(acceleration-mean(acceleration))' and ramp was still there. In some blogs people mentioned about using high pass (which I have used 5 Hz) filter to prevent ramping in time data. I have tried, 5 Hz High pass filter then applied cumtrapz. Ramping is not existing anymore.

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