Velocity signal from accelerometer and the integration using cumtrapz

Hi,

I have one question regarding the integration of the acceleration signal to obtain the velocity. If we consider a reciprocal motion and since the velocity and acceleration get reset at each cycle, would it be correct to use the cumulative integration cumtrapz MATLAB command for the whole period of acquired data? I think in this case we need to employ the cumtrapz for each loop or cycle separately, correct? But also I should mention that recognizing the cycles for an acceleramoter signal is so hard, there are a huge bunch of signals together being picked from the accelerometer!

Any answer is really appreciated,

Looking forward to hearing the help very soon,

Rasool

[David Hill]

Based on what you said, you would have a different velocity signal for each cycle so you would use cumtrapz() during each cycle. You would still need to scale for the uniform sample rate.