| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a motor controller which can prevent noise caused by utilizing an inexpensive microcomputer. <P>SOLUTION: This motor controller, which rotates a rotor by performing the commutation for a plurality of coils generating rotating fields and switches the rotational direction of the rotor by switching the direction of the commutation, possesses a rotational state detecting means which detects the rotational state of a motor, a transition period deciding means which decides whether the rotational state of the motor detected by the rotational speed detecting means is in a transition period, and a commutation control signal operating means which sets at least the amount of delay of a control signal for performing its control to a value different from its stationary state in case that the motor state decided by the transition period deciding means is in a transition period. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
