| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress operational sound of a motor and a mechanical section being driven by the motor when the motor is rotated at an extremely low speed. <P>SOLUTION: Driver elements Q1-Q4 supply a drive current to a motor by applying a drive voltage, and a gate circuit 51 supplies a gate signal to the driver elements Q1-Q4 such that the drive voltage or the drive current has a value corresponding to a command value. A control section supplies a command value to the gate circuit 51 to rotate the motor. When the rotation of the motor reaches a predetermined value every predetermined period, the gate circuit 51 is controlled to perform regenerative operation thence stop to the end of the predetermined period. <P>COPYRIGHT: (C)2008,JPO&INPIT |
