ELECTROMAGNETIC ACTUATOR WITH TWO MOBILE PARTS IN PHASE OPPOSITION

摘要

The invention concerns an electromagnetic actuator comprising a fixed stator having two poles Xc, said stator comprising one or two excitation coils, the actuator further comprising a mobile part provided with thin permanent magnets magnetised along the air gap direction. The invention is characterised in that the mobile member consists of at least two independent elements each mobile along directions parallel to the air gap plane intersection and the fixed stator median plane, in opposite directions, each of the mobile parts having three thin magnets alternately magnetised, integral or not with a yoke made of soft material, the thin magnets of said mobile elements being magnetised along the direction opposite to the corresponding thin magnets of the second mobile element or of the adjacent element, the yokes defining with the fixed stator part the yoke E.