| 摘要 |
PURPOSE:To reduce and simplify the size of a construction and to eliminate the radial vibration of a rotor by rotatably mounting a cylindrical field magnet on the outer periphery of a stationary shaft, and oppositely mounting sectional semicircular magnetic yoke to the magnet. CONSTITUTION:A cylindrical rotor field magnet 15 alternately having N-poles and S-poles is rotatably mounted on the outer periphery of a spiral group shaft 12. Sectional semi-circular magnetic yokes 18-1, 18-2 are fixed oppositely to the magnet 15. Armature coils 20-1, 20-2 which form a stator armature and a magnetoelectric transducer 21-2 as a position detector are fixed to the surface facing the field magnet 15 of the yokes 18-1, 18-2. |
