After making the measurement, here is the relation for my Asctec Pelican :

The maximum speed of the motor for my Pelican is around 780rad/s which is at 160

After averaging 4 measurements, I get this equation :

V[rad/s] = 4.194075* V[asctec (0-200)] + 108.5118

This should give you a good approximate of the real motor speed.

Guillaume Charland-Arcand
Master student in nonlinear control
École de technologie suppérieure (ÉTS)
http://etsmtl.ca/
http://dronolab.etsmtl.ca/