DC Motor Friction resistance
DC Motor Friction resistance
(OP)
Does anyone know how I can find the friction resitance of a motor assembly from performing measurements?
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DC Motor Friction resistance
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RE: DC Motor Friction resistance
RE: DC Motor Friction resistance
RE: DC Motor Friction resistance
You'll have to know all of the electrical losses in the motor, for which you will need a good motor model. Lots of electrical tests to determine the model. Once you have your model, so for any given current into the motor you can calculate all of the electrical losses. Then run the motor on a dynamometer. Electrical power into the motor less motor electrical losses, less less mechanical power out gives friction and windage. Up to you to sort it all out.
RE: DC Motor Friction resistance
RE: DC Motor Friction resistance
Very nicely said! Thinking out of the box, I guess. Star to you.
Katy1163,
By driving your motor with another "known" motor, you took out the copper and core losses.