| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a technique for suppressing eddy current loss in a linear motor. <P>SOLUTION: A linear motor 10 includes a slider 20 and a stator 30. The slider 20 has a magnet line 21l in which a plurality of permanent magnets 21 are arranged in series such that the same poles are opposed, and moves electromagnetically in the direction of arrangement of the magnet line 21l. The stator 30 holds the slider 20 inserted in an inner circumference, and includes electromagnetic coils 31 of a plurality of phases which receive supply of driving currents of respectively different phases. The stator 30 further includes a coil back yoke 33 disposed on an outer circumferential side of the electromagnetic coils 31 of the plurality of phases. The coil back yoke 33 is provided with a plurality of slits S along the direction of movement of the slider 20 for dividing a generation region of eddy currents into a plurality of portions. <P>COPYRIGHT: (C)2012,JPO&INPIT |
