320/D-BEMF: Back EMF Analysis in Dynamic Mode for Brushless Motors.
This test can be performed in automatic sequence on systems AMT320/WB, where it’s not planned to couple the motor with an external active brake, therefore the standard method cannot be applied. E.D.C. had developed a special method which allows to acquire, just after the switch off of the drive (which was powering the motor in test), the three signals issued by the motor three phases. With a high number of samples acquired and an accurate and incredibly fast analysis, it can be acquired the RMS value with the related Back EMF calculation, filtering as NOGO the motors which doesn’t stay in the limits set on a motor with balanced and well placed magnets.