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timabram
timabram is offline
#8
Jun13-06, 01:44 AM
P: 3
As you suggested this approach sort of works, as does simpsons (using 5,8,-1 rule)

But does not seem to handle negative acceleration well.

I tried a simple dataset ( moving the accelerometer vertically over a known distance)

and all of the proposals seem to work for +ve accelerations but as the accelerometer slows, -ve accelerations appear as could be expected, summing the integrated velocity results in excell itteratively the velocity rapidly becomes negative. I know this is not the case as the accelerometer only had positive displacemnt and therefore positive velocity.

any suggestions as to where to look ???