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RE3: vrf how to integrate accelerometer data to arrive at velocity

Question asked by VRFuser on Sep 17, 2008
Latest reply on Sep 17, 2008 by VRFuser
Stan Bischof (Richard S) <rsb@soco.agilent.com> wrote:
> "John Wing" <jwing@psemc.com> wrote:
> > The data from the accel is in Gs and I have the time history.
> >
>
> ok- then all you need to do is to integrate
>
>   a=dv/dt  so velocity is the integral of the acceleration.
>
> Hopefully you have even time steps, in which case this is very easy as
> you can use the integral(x) or defintegral(x,a,b) to get the velocity
> vs time.
>
> If you don't have even time steps you'll want to resample the data
> first then integrate. Build Arbitrary Waveform will do the resampling
> for you.

This assumes of course linear acceleration. If you are looking at 2D or 3D data it becomes more complex to deal with since everything becomes vectors.

Still comes down to basic Newtonian physics and a little math.

Stan


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Stan Bischof  Agilent Technologies  707-577-3994  stan_bischof@agilent.com
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