Some time ago I calculated Lego NXT motor parameters to use them in mathematical modeling of Lego motor. Also I used them to calculate controller constants for Segway-like robot.
When I bought Lego EV3 set, I wanted to port my Segway program to EV3. But I need to build EV3 motor model to calculate balance controller constants. In this post I described how I measured and estimated the motor's parameters.