| 摘要 |
PURPOSE:To control a motor correctly by a method wherein the pulse signal of an encoder is detected by the accelerating position of rotation having different ripples while the torque ripple, generating the angular speed of fluctuating rotation having reverse phase, is generated to add both torque ripples synergistically. CONSTITUTION:A frequency dividing signal is transmitted to a motor 11 through an amplifier 19 and the like to control the speed of the motor 11 but a comparing signal is transmitted to a reverse phase shifter 32 and the control signal of fluctuating rotation angular velocity omegai (two-dot chain line), reverse to another fluctuating rotation angular velocity omegao (one-dot chain line), is generated. This control signal is transmitted to the motor 11 through another amplifier 33. Accordingly, the motor 11 is added synergistically with a torque ripple, having the fluctuating rotation angular velocity omegao and another fluctuating rotation angular velocity omegai reverse to the angular velocity omegao, whereby the torque ripple is reduced and a straight line type torque T is obtained. According to this method, the motor 11 is rotated under a condition that the motor 11 has no fluctuating component. |
