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Filter a noisy data.

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Riddhesh
Riddhesh 2023-12-6
评论： Star Strider 2023-12-8
Hello, I have calculated Vehicle Speed which has steps in it. The steps were removed using the smoothdata() function. Later I used diff(Vehicle_Speed) / diff (time) to calculate acceleration which is very noisy. Using smoothing factor of 0.99 and different methods doesn't show any change but a smoothing factor of 1 gives a straight line. Is there any other way I can get smooth acceleration. As my further calculations are hindered due to acceleration data.
For information, I am working on a longitudinal model of a vehicle to calculate tractive force.
  2 个评论
Mathieu NOE
Mathieu NOE 2023-12-8
can you share your code and data ?
Star Strider
Star Strider 2023-12-8
For best results (assuming equal-sized vectors), use:
gradient(Vehicle_Speed) ./ gradient(time)
instead.

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