| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a device for control of an electric motor, capable of reducing a relative torque corresponding to a shaft torque, while minimizing the amount of decrease of the shaft torque. <P>SOLUTION: The device for control of the electric motor 10 controls a current that is supplied to the electric motor 10 which includes an outer rotor 21 and an inner rotor 22, both being provided concentrically around a rotating shaft 12, and a turning mechanism 30 for changing a circumferential relative angle between the outer rotor 21 and the inner rotor 22. It corrects the phase advance angle of a current in a range where a reduction of the shaft torque of the electric motor 10 corresponding to the phase advance angle is a specified one or below in a direction where the relative torque corresponding to the phase advance angle of the current decreases before change of the relative phase angle. <P>COPYRIGHT: (C)2011,JPO&INPIT |
