I have a data set of accelerlation data points over 10ms, sampled at 1MHz. I am trying to take this acceleration data and convert it to displacement data. I have a referenced graph that is attached that I am trying to get my data to match, but it seems like they did not do a cumtrapz, and only did a point by point integral.

When I tried to use Cumtrapz it seems like, A09 it does not have the return back to -5mm after a 2nd order cumtrapz. I have tried doing a point by point integration (A9(1:end-1)+A9(2:end)) * (dt/2); and this did not bring create the same graph.

I am looking for some insight on what the right function it should be/ the reason after doing a "double integral" these two graphs do not match.
Thank you for the insight.I have a data set of accelerlation data points over 10ms, sampled at 1MHz. I am trying to take this acceleration data and convert it to displacement data. I have a referenced graph that is attached that I am trying to get my data to match, but it seems like they did not do a cumtrapz, and only did a point by point integral.

When I tried to use Cumtrapz it seems like, A09 it does not have the return back to -5mm after a 2nd order cumtrapz. I have tried doing a point by point integration (A9(1:end-1)+A9(2:end)) * (dt/2); and this did not bring create the same graph.

I am looking for some insight on what the right function it should be/ the reason after doing a "double integral" these two graphs do not match.
Thank you for the insight. I have a data set of accelerlation data points over 10ms, sampled at 1MHz. I am trying to take this acceleration data and convert it to displacement data. I have a referenced graph that is attached that I am trying to get my data to match, but it seems like they did not do a cumtrapz, and only did a point by point integral.

When I tried to use Cumtrapz it seems like, A09 it does not have the return back to -5mm after a 2nd order cumtrapz. I have tried doing a point by point integration (A9(1:end-1)+A9(2:end)) * (dt/2); and this did not bring create the same graph.

I am looking for some insight on what the right function it should be/ the reason after doing a "double integral" these two graphs do not match.
Thank you for the insight. signal processing MATLAB Answers — New Questions

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