| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor control device which can easily improve the quality of a motor-operation sound. SOLUTION: The control device 10 generates a drive voltage V by weighting to a DC voltage an AC component of a prescribed frequency in an audible bandwidth, and rotationally drives a DC motor M on the basis of the application of the drive voltage V. By this, the AC component weighted to the drive voltage V causes a torque variation of the motor M which becomes vibration, and thus the operation sound of the same frequency is generated by relatively being emphasized more than others. Accordingly, the quality of the operation sound can be improved by suitably adjusting the frequency. COPYRIGHT: (C)2009,JPO&INPIT |
