| 摘要 |
PURPOSE:To provide a motor control circuit which can be stably controlled without oscillation even when a loop gain is raised even if a motor having no brake coil is used. CONSTITUTION:A differentiator 7 for differentiating the output of a motor driver 16 to negatively feed back is provided. The output of a position comparator 12 and a speed detection signal obtained by differentiating the output of a position sensor 3 are added to be supplied to the driver 16. The output of the driver 16 is differentiated by a differentiator 17, and fed back to the driver 16. Thus, pseudo induction superposing transmission characteristics occur. Hence, when a loop gain is increased, the oscillation of the loop can be prevented. |
