how can I calc velocity and acceleration in matlab?
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By the way, I have waveformdata with smplrate=5000 over timeperiod of 30sec.
Would you suggest any downsampling or filtering first? cause if I calc the diff(..), there is almost no difference in the data.Thank you
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Iain
il 22 Ago 2013
Modificato: Iain
il 22 Ago 2013
Velocity = (Position2 - Position1) * sample_rate (or divide by the difference in times)
Acceleration = (Velocity2-Velocity1) * sample_rate (or divide by the difference in times)
PS. It is a calculation which is prone to noise.
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Iain
il 22 Ago 2013
It depends on your data.
Yes, you might get accuracy improvements by averaging out over a few samples to reduce temporal noise. You might get more improvement by median-filtering, if the noise is prone to have massive spikes.
What you need to do depends on the data.
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