TORQUE VARIATION REDUCING DEVICE FOR MOTOR

摘要

PURPOSE:To suppress rotation irregularity due to torque variation of a motor, by a method wherein torque variation correction data is operated from a torque variation waveform, and motor drive current is controlled by the torque variation correction data. CONSTITUTION:Torque variation waveforms of a motor 3 are measured by a torque variation waveform measuring instrument 4. A torque variation correction data operation device 5 operates and produces torque variation correction data corresponding to rotation angle of the motor 3 based on the torque variation waveform. The torque variation correction data is written in a torque variation correction data write device 6, and a motor rotation control device 7 is controlled based on the data and motor drive current is controlled.