| 摘要 |
An electromagnetic actuator assembly 1 comprises an electromagnetic stator and an armature 3 including at least one permanent magnet 4. Also disclosed is an electromagnetic actuator assembly comprising first and second electromagnets 9, 11 and an armature 3, where the first and second electromagnets 9, 11 produce magnetic fields in opposite directions. The solenoid coils forming the first and second electromagnets 9, 11 may be wound in opposite directions. The first and second electromagnets 9, 11 may be used to provide push and pull forces on the permanent magnet armature 3. The assembly may include flux guides 7, 8, 13 to distribute the magnetic field. The assembly may be arranged such that different force profiles between the stator and armature are provided during use, to suit various applications. The actuator assembly may be used in locks and medical devices in biomechanics, heart assistance or replacement, portable ventilators and wound pressure applications. |
