| 摘要 |
PURPOSE:To simply enable multi-polarization, by making a constitution with a number of only two stator coils enough regardless of a number of the poles. CONSTITUTION:In the part of two stator yokes 5, 6, facing each rotor magnet 2, are constructed two teeth 7, 8 at a distance of pitch equal to a constructional pitch of the magnetic pole. The row of the teeth will be constructed so as to provide a biting of each other in a direction to cross the way of construction of the rotor magnet pole, simultaneously with those of yokes arranged for the teeth to relatively shift by 1/4 pitch of the pole construction pitch with respect to a pole of the rotor magnet. Two Hall elements 10, 11 will be arranged so as to provide a displacement by an electrical angle of 90 deg. + 360 deg.X n relatively with respect to a pole of the rotor magnet. In this way, two will be enough for a number of the stator coils regardless of a number of the poles, and for an increase of number of the poles, only thing enough will be an increase of number of poles of the rotor magnets and of teeth of the stator yokes. |
