| 摘要 |
PURPOSE:To generate uniform and smooth torque by offsetting a pulsating part included in a rotational torque generated between stator and rotor by a pulsating torque generated between a magnetic path member and said rotor. CONSTITUTION:A fixed annular magnetic path member 30 is provided to form a magnetic path parallel to a stator 10 for a rotor side magnetic flux flowing through the magnetic path of a rotor 20 and to cause a reluctance of the former magnetic path to change circumferentially of said rotor side magnetic flux. The number of poles of the change of reluctance of said magnetic path member 30 is selected and the center of said pole is made to deviate circumferentially from the center of the magnetic pole of said stator 10 so that a pulsating part included in a rotational torque generated between the stator 10 and rotor 20 is offset by a pulsating torque generated between the magnetic path member 30 and rotor 20. |
