| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem of impossible to restrain motor noise and vibration due to instable torque control because of the speed data for respective sections are not the actual speed variations, and the torque control with the speed data does not perform function of restraining an actual speed variations at the time of conducting torque control. SOLUTION: Calculation is performed in a microcomputer so that a speed detection value for each section dividing one rotation matches an actual speed variation, regardless of design or variation of a motor, or a variation in an induced voltage waveform due to the reaction of an armature. |
