| 摘要 |
The present invention realizes a permanent magnet type motor which: enhances resistance to demagnetization almost without weakening torque; improves distribution of a magnetic flux density of a gap; and reduces torque ripple or cocking torque. When a permanent magnet type motor is manufactured, a part, having low resistance to demagnetization, of the multiple permanent magnets, assembled into a rotor core, is selectively and evenly demagnetized. |
