How to obtain parameters of DC motors?

Help & Support Robot Parts
1

Hello, I appreciate if somebody could help me to resolve this. I bought a geared DC motor from a store. I would like to obtain the following information: Resistance, Inductance, Back EMF constant, torque constant, and the voltage caused by Back EMF when the motor is supplied by a voltage input higher than the recommended one. What is the best way to obtain these values? Do I need fancy equipment to get these values by experiments?

Even I asked the company, they can only provide the following information (at the recommended voltage): torque constant, Back EMF constant, Dynamic Resistance and Motor Regulation. The guy asked the manufacturer. He said that these are all he can get and he has no idea what they mean. if I supply 4V higher than the recommended input voltage, will these provided values change a lot? Which parameter(s) stay the same?

Thank you

2

Normally it would be up to the manufacturer to determine these based on specs / experimentation.
You’d need to devise a test for each.

Why do you need such detailed info though? Can you share your application?

3

I need to do computer modelling of the motor. Since the manufacturer does not provide the info, I need to determine the values by experiments. Any good source on how to do it?

4

Nothing in particular immediately comes to mind, but we’ll be sure to reply here if we think of something. Perhaps the community can also provide some input.