| 摘要 |
An actuator ( 1 ) has two parts in the iron circuit and has a simple construction. A short-circuit element ( 3 ) has an offset ( 90 ), which depending on the position of an armature ( 9 ) varies the course ( 60 ) of magnetic flux in such a way that over the entire stroke, a constant, high magnetic force is achieved, and thus a shallow course of magnetic force in stroke is attained.
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