Is there anyway to convert vibration acceleration data into velocity ?

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

[Walter Roberson]

Variable time step or fixed time step?

[Ella]

variable time step The acceleration data is acquired in real time

Answer 1

[Ella]

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.

[sercan demirkiran]

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.