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首页> 外文期刊>Bulletin of the American Physical Society >APS -Annual Meeting of the APS Four Corners Section- Event - Application of Lenz's Law to Magnetic Levitation
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APS -Annual Meeting of the APS Four Corners Section- Event - Application of Lenz's Law to Magnetic Levitation

机译：APS-APS四角分会年会-活动-伦茨定律在磁悬浮中的应用

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Lenz’s law can be used to achieve magnetic levitation through induced currents. The law states that changing magnetic fields will induce an electric current, or eddy current, in a conductor surface such that it produces an opposing magnetic field.We will explore the constraints for magnetic levitation through the use of eddy currents, induced by a rotating disk of a permanent-magnet assembly. There are no eddy currents when the disk is stationary, but a rotating disk yields formation of two opposing eddy currents over the dimensions of the individual permanent magnets in the assembly. One of the eddy current repels the magnetic field that created it, while the other eddy current generates an opposite magnetic field resisting a change in the magnetic flux. If the rotation frequency of the magnet assembly is comparable to the typical lifetime of the eddy currents, magnetic levitation may be achieved. We will discuss the parameters that need to be considered for use in an actual device.
机译：伦兹定律可用于通过感应电流实现磁悬浮。该法则指出，不断变化的磁场将在导体表面感应出电流或涡流，从而产生相反的磁场，我们将探讨通过旋转磁盘感应产生的涡流对磁悬浮的限制。永久磁铁组件。当圆盘静止时没有涡流，但是旋转的圆盘会在组件中各个永磁体的尺寸上形成两个相反的涡流。一个涡流排斥产生它的磁场，而另一个涡流产生一个相反的磁场，该磁场抵抗磁通量的变化。如果磁体组件的旋转频率与涡流的典型寿命相当，则可以实现磁悬浮。我们将讨论在实际设备中使用时需要考虑的参数。

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