| 摘要 |
<p>PURPOSE:To improve balancing control performance by locally magnetically saturating corresponding positions between both the same magnetism poles of electromagnets in a radial magnetic bearing, preventing leaked magnetic flux across the different magnetism poles of the magnets and thereby preventing interference between magnetic passages. CONSTITUTION:A magnetic bearing 2 which is provided with four pairs of electromagnets 12-15 consisting of pairs of different magnetism poles 12a, 12b, 13a, 13b, 14a, 14b, 15a, 15b are arranged concentrically with a shaft 1. The electromagnets are arranged at unequal spaces in such a manner that the mutually adjacent same magnetism poles 12a, 15a, 13a, 14a, 12b, 13b and 14b, 15b are neighbored one another, the different magnetism poles are separated one another and the same magnetism poles 12a, 15a, 13a, 14a, 12b, 13b and 14b, 15b are approached one another. The corresponding positions of an electromagnetic stator 2a corresponding to between the same magnetism poles of the electromagnets are locally magnetically saturated by a permanent magnet 19 to prevent leaked magnetic flux stranded between the different magnetism poles of the each other different electromagnets.</p> |
