I want to down sample my vehicle speed.

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Riddhesh
Riddhesh 2023-12-7
评论： TITTU GEORGE 2024-2-14
Hello, I am working on calculations of tractive force using vehicle longitudinal model. I want to down sample my vehicle speed which has steps in it. I am using diff(Vehicle_Speed) / diff(time) in order to calculate acceleration. The acceleration is too noisy which in turn gives me noisy tractive curve. Please let me know how to down sample my data to 10 Hz.

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回答（1 个）

TITTU GEORGE
TITTU GEORGE 2023-12-7
Filtering the differnce equation to get acceleration can be considered..This will help in removing the noise
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Walter Roberson
Walter Roberson 2023-12-7
@Riddhesh
You can only use downsample() for that purpose if the ratio of the original frequency to 10 Hz happens to be an integer. Otherwise you should use resample
... I don't think you will be satisfied with the results, but you will need to try it and see.
TITTU GEORGE
TITTU GEORGE 2024-2-14
A simple first order filter with a suitable time constant will do the trick in this case

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