| 摘要 |
PURPOSE:To reduce torque ripple and enhance efficiency, by a method wherein a rotor is provided with two rows of magnetized sections in the ratio 2:1 on the pole quantity, and wherein each coil corresponding with each magnetized section is arranged, and wherein the one side is provided with a conduction change-over means. CONSTITUTION:On a magnetic pole 2 fitted on a rotor yoke 1, the first magnetized section 21 of 2m poles (m is an integer of 1 or more) and the second magnetized section 22 of 4m poles are formed. So far as a stator set confronting the magnetic pole 2 of the rotor is concerned, the first coil 5 and the second coil 6 are arranged corresponding with the respective magnetized sections 21, 22, and a positional detection element 10 for detecting the position of the first magnetized section 21 is set. The direction of making current flows to the first coil 5 corresponding to the detection signal from the positional detection element 10 are changed over in sequence, and to the second coil 6, current in always the same direction and in proportion with the current of the first coil is made to flow. |
