| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a high-damping and high-thrust cylindrical linear motor, and an electromagnetic suspension and a motor-driven power steering device using the motor. Ž<P>SOLUTION: A stator 2 has a stator winding 7 and a stator core 5. A mover 3 includes a mover core 11 and a plurality of permanent magnets 9. The stator core 5 includes a plurality of stator core magnetic poles 51 having a plurality of small magnetic poles 51b on the surface of the side of the mover, two auxiliary magnetic poles 53 arranged at both ends of the stator core magnetic poles, and a yoke portion constituting a magnetic circuit together with the stator core and the auxiliary magnetic poles. A magnetic circuit constituted of the stator core is shared with the three-phases. The plurality of permanent magnets 9 of the movers 3 each are configured to have the same polarity, wherein each permanent magnet is positioned at a position opposite to the plurality of small magnetic poles 51b provided to one stator core in the plurality of stator core magnetic poles. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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