DRV8308EVM: 3 phase BLDC Motor- Back EMF measurement

120 degree standard Trapezoidal commutation of the Motor, phase waveform:

180 degree Sinusoidal commutation of the Motor, phase waveform:

Denny,

What is the reason for the need to measure the back EMF? This will help define what is needed.

Regards,

-Adam

Hi,

We need to measure the back EMF, as we are interested in determining the motor's speed because we have a application in which both very low torque and very high torque is being applied to the motor.

Hence we need to analyse the Motor behavior at different speed at various torque. 

Thanks,

Denny

Hi Adam,

Could you please connect me to the person who could help in measuring the Back EMF of the motor. Since, we are very much interested and keen to measure the Back EMF at different speed of the Motor for our application.

Thanks,

Denny