Monitoring electric motor drives, characteristics or new condition by correlating regular measurements of voltages or currents with revolution rate

摘要

The method involves measuring rotation angles relative to each other at various points in the drive train and allocating to drive torques by a computer that records and displays them and/or triggers switching processes. Comparisons with manufacturer's characteristics or the new condition are made using correlating measurements by regularly measuring voltages or currents and feeding into a computer that correlates them with the revolution rate.