| 摘要 |
<p>PURPOSE:To provide a motor driving device capable of always stably stopping a capstan motor by reaccelerating the motor in the period corresponding to the swing-back amount generated at the time when the capstan motor is stopped. CONSTITUTION:A voltage for inversely rotating the capstan motor is impressed on the capstan motor 3 by a motor control part 11 to apply a brake. At this time, when the time point at which the phase difference between FG pulses 100 and 200 is changed is detected by an inversion detecting part 121, a control voltage to rotate the capstan motor 3 to the normal rotating direction is supplied by the motor control part 11 through a filter circuit 2 to reaccelerate this capstan motor 3 to the normal rotating direction. At the same time, the device is provided with the constitution to release the reaccelerating control of the motor, when the time point at which a cycle of FG signal 100 becomes zero is detected by a stoppage detecting part 122 during this period.</p> |
