| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a control device for a BLDC motor that controls rotating-speed according to the number of poles in a replaced motor, while automatically sensing the motor replacement when a motor is replaced with the motor having the different number of poles, and its control method. <P>SOLUTION: The control device for the BLDC motor 4 calculates a rotating speed by using rotating-speed calculation information set so as to be different from each other for each number of poles of the BLDC motor 4. The control device is composed by including a current sensor 6 which senses a load current of the BLDC motor 4; and a control unit 7 that senses the replacement with the motor having the different number of poles on the basis of changes in the sensed load current with respect to a reference load current, so as to change reference rotating-speed calculation information to the rotating-speed calculation information corresponding to the number of poles in the replaced motor. <P>COPYRIGHT: (C)2008,JPO&INPIT |
