| 摘要 |
The multipolar rotor (11) is magnetised in the axial direction and comprises, in one of its faces situated opposite the polar pieces (1 and 2), alternate north and south poles distributed along its periphery. Each of the polar pieces (1 and 2) presents an interior concave edge supplied with teeth (5) separated by the interposed zones (6). An intermediate polar piece (7) is placed between the principal polar pieces (1,2) and presents intermediate teeth (8) located opposite the said polar teeth (5) and engaged between them. The core (3), on which the coil (4) is mounted, couples the polar pieces (1 and 2) to the coil (4) magnetically. The pitch alpha s of the teeth (5) of the polar pieces (1 and 2) is different from the pitch alpha r of the poles of the rotor. …<IMAGE>… |
