| 摘要 |
PURPOSE:To increase the generated torque of a step motor by forming a pulse motor in an external rotor type, and constructing to dispose a stator therein, thereby increasing the diameter of a gap. CONSTITUTION:A rotor 402 made of a yoke 412 which has teeth of a pitch on the outside and passes a magnetic flux is provided, and exciting widings 403, 403' and a stator 404 having two permanent magnets 401 are provided inside. The phases of the teeth of poles 406-408 are displaced by tau/4, tau/2, 3tau/4 with respect to the phases of the teeth of the pole 405. Thus, a passage of line of magnetic force generated from the magnet 40 and a passage of line of magnetic force generated from the windings 403, 403' of the energized state are separated. |
