| 摘要 |
<P>PROBLEM TO BE SOLVED: To accurately detect a relative position between a rotor and a stator of a motor regardless of whether the motor is in a stop state or in a rotational state. <P>SOLUTION: The control method for a sensorless motor includes first relative position detection circuit systems (13, 15, and 16) which contain means for feeding a rotor/stator relative position measuring high frequency current component as a drive signal while a motor is stopped and determines a relative position between the rotor and the stator based on the measurement of a current flowing through a winding (20) corresponding to the feeding, second relative position detection circuit systems (14, 15, and 16) which contain means for superposing the rotor/stator relative position measuring high frequency current component on the drive signal while the motor is operated and determines a relative position between the rotor and the stator based on the measurement of the current flowing through the winding (20) corresponding to the superposing, and drive signal generation circuit systems (16 and 11) which generate the drive signal based on the determined relative position. <P>COPYRIGHT: (C)2013,JPO&INPIT |
