| 摘要 |
PURPOSE:To avoid the generation of the ununiformity of torque, by setting no stator yokes. CONSTITUTION:In a face-to-face type brushless motor a rotor is rotated by feeding current properly to a plurality of armature coils 3, with the mutual action between its current and magnetic flux due to a magnet 2. The armature coil 3 is directly set on a housing 5, and no stator yokes are set. As a result, magnetic flux density produced by the magnet 2 is distributed in the shape of a sine wave, including no harmonic component, and so the ununiformity of torque due to the harmonic component is not generated. |
