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Problem with convert acceleration to velocity and displacement

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vu ngothanh
vu ngothanh 2016 年 6 月 9 日
回答済み: Bora Eryilmaz 2024 年 3 月 21 日
Hi everyone,
I used DAQ to get acceleration, however, when I convert accleration to velocity and displacement (using 'cumtrapz' function) is not OK like the picture below:
Problem is that the velocity and displacement is increase with time. What i need to do make the velocity and displacement stable around 0.

回答 (2 件)

Jos (10584)
Jos (10584) 2016 年 6 月 9 日
Apparently there is an offset in your acceleration data. You can subtract a running mean
A(k) = ValueFromDaq - mean(A(1:k-1))
  6 件のコメント
Jos (10584)
Jos (10584) 2016 年 6 月 10 日
Good suggestion, Star Strider, to use the median.
vu ngothanh
vu ngothanh 2016 年 6 月 13 日
Dear Mr Jos and Star Strider,
at last, I found "detrend" function. I think that is the best solution for this situation.
Thank you for you all for helping me.

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Bora Eryilmaz
Bora Eryilmaz 2024 年 3 月 21 日
The new convertVibration function in MATLAB R2024a release of the Predictive Maintenance Toolbox lets you compute baseline-corrected and filtered acceleration, velocity, and displacement signals from vibration measurements using a single sensor output from either an accelerometer, velocity sensor, or displacement sensor.

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