| 摘要 |
Linear electric motor or actuator comprising a movable part ( 21 ) consisting of a soft-magnetic core ( 22 ) which supports a set of electrically conductive turns ( 25 ), which movable part is slidably supported by a rail ( 26 ) which is provided with at least one set of permanent magnets ( 27, 30, 31 ) extending in longitudinal direction along the core's periphery. The magnets ( 27, 30, 31 ) produce a magnetic field that cooperates with the set of turns ( 27, 30, 31 ) via an air-gap. The soft-magnetic core ( 22 ) of the movable part ( 21 ) is made of soft-magnetic composite material. The electrically conductive turns ( 25 ) are wound around the periphery of the core ( 21 ) substantially perpendicularly to the centerline thereof, and at least two sets of magnets ( 27, 30, 31 ) are arranged along its periphery such that the at least two sets of magnets ( 27, 30, 31 ) are arranged at different angles to the core ( 22 ).
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