This question is about " PID Controller Design for a DC Motor "

Hi all,

I would like to know where do I find the information present in the DC motor block? (damping,inertia,EMF, Resistance, inductance). I have simulated and tested the pid gains found with this model with a S240-1A6 motor bought from servocomponents, the simulated values perfectly work in practical even thought the parameter values in simulation do NOT match with the parameters in the datasheet of the motor.

In simulation in motor datasheet

damping 0.1 not found

Inertia 0.01 0.00003

Back EMF 0.01 not found

Resistance 1 1.84 - 2.50 ohms at 4A

Inductance 0.5 2.6mH

Now I would like to simulate using a bigger motor so how do I find the new parameters? See below model and motor datasheet.

Thanks in advance.

Answer 1

[Rhea Chandy]

Hi Manpreet,

I think you're talking about this file exchange submission : PID Controller Design for a DC Motor - File Exchange . In that model, the DC Motor is modelled as a state-space model, and only has the following parameters (Damping,Inertia, back EMF, Resistance, inductance).

As I understand it, you are looking for a DC motor model that has other parameters as well. These examples in Simscape Electrical may be more suitable for you:

1. Permanent Magnet DC Motor
2. DC Motor Control