| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a movable device using audible sounds generated by a DC motor for recognizing at least one of a plurality of movement patterns of a movable body. <P>SOLUTION: A movable device includes a movable body 1, a drive part 2 having a DC motor 20 and formed with the DC motor 20 which is driven to move the movable body 1 in a plurality of movement patterns, and a control part 3 which PWM-controls the DC motor 20 to generate a driving current and which can change a PWM frequency. The control part 3 sets the PWM frequency of the driving current to be fed to the DC motor 20 in at least one movement pattern of the movable body 1, different from that in other movement patterns, to change the physical amount of audible sounds generated by the DC motor 20. <P>COPYRIGHT: (C)2013,JPO&INPIT |
