Position from an Accelerometer

[Parggoo]

Hello, I am reading the values from an accelerometer in m/s^2 and I would like to extract the displacement (in mm) . Should I double integrate my values in order to find the position at a certain time or taking into account that I have a vibration system(which does oscillations) can I just use a=ω^2*x where a=the acceleration aplitude,ω=frequency(2*pi*f) and x=position? 

[D@n]

Theoretically double integration should work.  Practically, I've heard it has some serious problems.  From a DSP standpoint, each integrator amplifies the noise infinitely at DC.  So, to be successful, you'll need to anchor your results to reality on a periodic basis.

I'd love to hear of your experience with it (or that of others).

Dan

[Parggoo]

Thank you for your useful advice ! 
I will try and provide you with the result