| 摘要 |
PROBLEM TO BE SOLVED: To provide a brushless motor which can get extremely smooth rotational output by reducing both cogging torque and torque ripple and also which is extremely smooth in rotation even at non-current-application. SOLUTION: This is an outer rotor type of brushless motor A where a permanent magnet is used for a rotor 1, the magnetization 11 of the above permanent magnet is performed by the combination of trapezoidal wave magnetization and skew magnetization, and the skew angle of the skew magnetization is in the range of±15% to the reference angle. COPYRIGHT: (C)2004,JPO |
