How do I go about finding the load resistance and load inductance of a brushed DC electric motor? I would guess that:
Load resistance = Operating voltage / Load current
These values you can find in the datasheet. To find motor inductance, you operate the motor with a "nominal load" so that it uses an average current with the same value as the "load current" from the datasheet. You then need to take a scope plot of the PWM control signal and motor current from the current sensor (isense). Because inductance is defined by:
V = L di/dt
where V = the rising voltage of the PWM signal
di = the change in isense
dt = the change in time where the PWM signal is High
Then solve for L which would be load inductance. Is this method correct?