DC motor parameters


#1

Hello,

Do you guys know the parameters for the DC motors used in GoPiGo? or where can I find the datasheet?

Thanks


#2

Hey Jesus, we don’t have a datasheet for the motors; we will ask the manufacturer. Maybe you can tell us what you’re looking for?


#3

I’m looking for the armature resistance, armature inductance, torque constant, friction constant, back EMF constant, moment of inertia


#4

We’ll ask. However, these are usually hard numbers to get out of a manufacturer, and they may even vary from batch to batch of motors.

Friction constant should be a function of the wheel material though, right? Not necessarily the motor?


#5

Nominal values should be ok.

About the friction constant, there is one for a motor too, e.g see

and they talk about the viscous friction coefficient


#6

I forgot the link
http://coecsl.ece.illinois.edu/ge320/ge320_lab2.pdf