LVDT waveform to velocity

[Gb7384]

Hello,

I am a newbie and I try to transform the voltage measurement of a LVDT into a displacement & velocity measurement with LV.

So far, I managed to convert the voltage into a position with a scale factor; but I'm pretty lost on how to convert it into a velocity measurement.

This is the code that I use for position & maximum displacement :

A friend of mine sent me this from an old vi that he has about the transformation into a velocity measurement:

But I am pretty at loss with those, as they are only useable on a 1D array, if I am not wrong. May I ask for some help, please ?