Magnetic levitation device and method for controlling same
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United States of America Patent
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Feb 23, 2015
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May 19, 2014
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Abstract
A magnetic levitation device includes a pair of magnets, a displacement detection means, and a control means. The pair of magnets generate magnetic force for supporting a ferromagnet in a noncontact manner. The displacement detection means detect the displacement of the ferromagnet in a lateral shift direction. The control means suppresses the vibration of the ferromagnet in a lateral shift direction. The control means controls the pair of magnets so that a stronger magnetic force acts on the ferromagnet that is displaced in a direction departing from the center of the vibration than when the ferromagnet is displaced in a direction returning to the center of the vibration.
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