| 摘要 |
The invention relates to a linear drive with a fixed active unit (1), comprising coil bodies (2), for generation of a varying magnetic flux and an active running surface (5) with distributed teeth through which the magnetic flux flows, a passive unit with magnetic flux regions, a bearing unit (15) which permits a friction-less relative displacement of active and passive units and a controller, by means of which the magnetic flux may be controlled. The invention is characterised in that the passive unit is divided into a thin, toothed plate (10), mounted such as to move and a fixed return element (11), whereby the toothed plate (10) is mounted between the active surface (5) of the active unit (1) and the return element (11) and magnetic conducting teeth (13) and magnetically non-conducting tooth gaps alternate on the toothed plate (10) in a manner corresponding to the distributed teeth and arrangement thereof on the active running surface (5).
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