| 摘要 |
The stator shape is varied by connection of the stator yoke to improve torque ripple characteristic of DC motor. The sheet- shaped coils are circularly distributed to the stator yoke (5) of the motor. When the angle of the sheet-shaped coils is degree, a number of slots (7) are formed to the parts of &phgr; = 3π x 10/16≦̸ , which make the cogging force zero. The stator yoke (5) is formed by the several slots (8) or holes (9).
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