| 摘要 |
An electrical actuator is provided to generate a force in an axial direction by overlapping predetermined parts of two toroid coils. An electrical actuator includes a center rotor(38), and an external stator(39). The center rotor has a coil which is radially arranged on a center supporting cylindrical circumference. The coil forms a rotatable toroid type magnetic field. The external stator has a coil which is radially arranged and forms a toroid type magnetic filed which rotates an external supporting cylinder inwardly. The rotor is inserted from a driving axis direction into a center of the stator using an empty space between stator coils. The toroid type magnetic field of the center rotor and the toroid type magnetic field of the external stator are overlapped. The electrical actuator is driven by two overlapped magnetic fields so that an overlapped area of the magnetic fields is enhanced according to a current rotation direction of the rotor and the stator. The electrical actuator is driven by using a power which is operated in an axial direction so that an offset area of the magnetic fields is minimized. |
