| 摘要 |
<p>1. Electrical linear drive with a stator provided with a multi-phase widing and with a rotor provided with permanent magnets (30), which are arranged with a gap spacing therebetween, wherein the stator is subdivided into stator portions, which each comprise several pole pitches (tau) and the phase windings (I, II, III) of which are each switchable by way of a respective switching equipment (40) to a current source, wherein sensors (38), which respond to control elements (34) provided at the rotor and by means of which a correctly phased current feed into the respective phase winding is controlled in dependence on the relative setting of rotor and stator portion and the presence of the rotor is ascertained, are provided at the individual stator portions, characterized thereby, that the control elements (34) are arranged in a control element row, wherein the regions, which are effective on the sensor, each display the length of a pitch division and repeat at twice the pole pitch spacing, that sensors (a, b, c) associated with the phases and further sensors (d) are combined itno groups which repeat along the stator at a periodic interval which corresponds to the length of the control element row, wherein sensors (a, b, c) associated with the phases of one group are arranged within one pole pitch (tau) of the respective periodic interval and the further sensor (d) of the group is arranged within an adjacent pole pitch.</p> |
