| 摘要 |
<p>The present invention relates to a two-phase motor formed by a stator part (1) excited by electric coils and a magnetised rotor (2). The rotor (2) has N pairs of poles which are radially magnetised in alternate directions, N being equal to 3 or 5. The stator part (1) has at least two W-shaped circuits (3, 4) comprising each an electric coil (20, 21) surrounding the central leg (5, 6). The 'W' circuits (3, 4) are so arranged that when one of the central legs faces a magnetic transition, the other central leg faces a magnetic pole. The polar opening outs of the legs of a 'W' circuit are angularly spaced by π/4. The polar opening outs of the central legs of the two 'W' circuits (3, 4) belonging to different phases are angularly spaced apart by an angle which is substantially equal to π/2±k.π/N, where N is the number of pairs of magnetic poles, that is 3 or 5, and k is equal to 0, 1, or 2.</p> |
