IEEJ Transactions on Industry Applications
Online ISSN : 1348-8163
Print ISSN : 0913-6339
ISSN-L : 0913-6339
Magnetic Levitation System of a Flexible Steel Plate with Vibration Suppressing Electromagnets
Hitoshi HayashiyaNoboru ArakiJonathan E. PaddisonHiroyuki OhsakiEisuke Masada
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1997 Volume 117 Issue 2 Pages 238-244

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Abstract

A magnetic levitation system is applied to the non-contacting conveyance of steel plate in a steel mill. In this system, the flexibility of the steel plate may deteriorate the levitation characteristic and so it is proposed to arrange the electromagnets along the steel plate length. A low pass filter is used to reduce the influence of the steel plate natural vibrations. Simulation results of the levitated plate's response by a finite element method and magnetic levitation experiments are presented. The results show the vibration suppressing electromagnet which only uses the velocity of the levitated object as a feedback is able to control the low frequency natural vibration effectively and a low pass filter is able to avoid the excitation of the high frequency natural vibration.

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© The Institute of Electrical Engineers of Japan
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