| 摘要 |
A three-phase brushless dc motor using two position detecting elements to obtain the signal necessary for sequentially energizing the motor and capable of obtaining one reference pulse signal for every rotation of the motor, the reference pulse signal being used for phase detection of the motor. More particularly, the present invention allows the two position detecting elements to be disposed radially in the same direction and on the same plate so as to reduce mounting errors between the two position detecting elements, thereby improving the performance of the resulting brushless dc motor and reducing its manufacturing costs.
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