| 摘要 |
PURPOSE:To reduce the rotational ununiformity of a motor, by changing the sorts of the widths of both magnetic poles and respective armatures, and by reducing the chance of the respective armatures and the magnetic poles of the same widths confronted with each other at the same positions. CONSTITUTION:On the periphery of a stationary armature 2 fitted stationarily on a motor frame on the periphery of a rotary shaft 1, armature teeth 3, 3'... are radially arranged, and the widths of the stator armature teeth 3, 3'... are composed to be the different widths of two or more sorts. Then, the respective armatures 6, 6', 6''... of the different widths of three sorts are composed, and when the same phase current is conducted to the three respective armatures 6, 6', 6'' in the range of 120 degrees namely 360 degrees divided by 3 among the respective armatures 6, 6' 6''..., then commutation is performed at the same time by the phase lead or the like of feed current. As a result, the chance of the respective armature 6 and the magnetic poles 7 of the same widths confronted with each other at the same positions is reduced, and the rotational irregularity of a motor is decreased. |
