| 摘要 |
PURPOSE:To dispense with a commutation pole of narrow pole width and to prevent the possible variation in a motor characteristic by differentiating each torque produced by each coil which forms the first and the second phases. CONSTITUTION:Magnetic poles 4N and 4S are magnetized size by side with a pole width alpha, while magnetic poles 5N and 5S are magnetized between poles 4N and 4S side by side with a pole width beta. Here, alpha=240 deg. and beta=120 deg.. Thus, by the interlinkage of a pair of coils IA1, IA2, IB1 and IB2 forming phases A and B respectively with poles 4N and 4S and with poles 5N and 5S, a different torque is produced, so that it becomes unnecessary to provide a narrow interpole as seen in a conventional motor and easy to magnetize the poles. |
