Influencing Factors of Levitation Drift Caused by Magnet Vibration |
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Authors: | Xing-Yi Zhang Jun Zhou You-He Zhou |
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Affiliation: | 1. Key Laboratory of Mechanics on Western Disaster and Environment, Ministry of Education, Beijing, P.R. China 2. Department of Mechanics and Engineering Science, College of Civil Engineering and Mechanics, Lanzhou University, Lanzhou, Gansu, 730000, P.R. China
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Abstract: | In a levitated high-temperature superconducting system, the drift of levitated body due to vibration of the permanent magnet
or an alternating magnetic field is a key and fatal subject in its applications. In this paper, the levitation drift caused
by a PM vibration is investigated by a vibration measurement system. The influences of critical current density, levitation
gap, weight of the levitated body, voltage across the shaker (amplitude of vibration), cooling height, etc. on the levitation
drift have been measured, respectively. In the end, several methods which can reduce the levitation drift are presented and
compared; the most reliable method is enhancing the critical current density of the superconductors. |
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