| 摘要 |
PURPOSE: To facilitate the drive of forward and backward rotations by eliminating hunting operation when a rotor stops in a rotary magnetic type motor and enabling rotary motion to converge rapidly. CONSTITUTION: A rotor 1 consisting of permanent magnet is constituted by surrounding the rotor with three stator plates 21-23 which can be excited by coils at an equal angle width. In the rotor, three cut-out parts are positioned at an angle of 120 degrees each out-out part is connected by three circular parts consisting of each concentric arc. Two arc parts out of three arc parts of the rotor are magnetized to a same pole with the same magnetic flux intensity (N, N), the remaining one arc part is magnetized to a different pole from that of two arc parts, and the rotor magnetic part has the double magnetic flux intensity (2S) that each magnetic flux strength of two arc parts. On the other hand, the stator magnetic pole part is provided with the same center angle width as that of three arc parts and one of them can be excited to the double magnetic flux intensity (S) of the other two stator magnetic pole parts. |
