Bidirectional electro magnetic linear actuator for valve, has armature located in exciting coil with permanent magnets for providing holding force at end sections

摘要

The electromagnetic actuator has an armature element (3) that is located within a coil (2). The armature moves between two end positions when the coil is excited by signals from an electronic circuit (6) . The end sections have inset permanent magnets (4A,4B) and these provide a holding force