中国电子科技2008，Vol.6Issue(2)：181-184,4.
Analysis of Vertical Oscillations of a Permanent Magnet Freely Levitated above an YBCO Bulk in an AC External Magnetic Field
Analysis of Vertical Oscillations of a Permanent Magnet Freely Levitated above an YBCO Bulk in an AC External Magnetic Field
摘要
Abstract
The effect of the moving speed of perma- nent magnet (PM) on levitation force between PM and high temperature superconducting (HTS) bulk is analyzed and described in the PM-HTS levitation system. The PM vibration characteristic in the PM-HTS system is investigated. The PM may collide with the HTS in vibration if the amplitude and frequency of driving force satisfy the relationship Pmin = A f n. When the load of the system is below a threshold, the minimal collision amplitude of the driving force increases with the load increasing, however, it sharply drops to zero when the load exceeds the threshold. With the increase of the initial height of the PM, the threshold load increases, but the minimal driving force which causes a collision between PM and HTS decreases.关键词
Collide/computational modeling/dynamics/vertical oscillationKey words
Collide/computational modeling/dynamics/vertical oscillation分类
电子信息工程引用本文复制引用
Yong Zhang,Ya-Li Zhang,Cui-Hua Cheng,Yong Zhao..Analysis of Vertical Oscillations of a Permanent Magnet Freely Levitated above an YBCO Bulk in an AC External Magnetic Field[J].中国电子科技,2008,6(2):181-184,4.基金项目
This work was supported by the National Science Foundation of China under Grant No. 50372052, 50588201, the National Basic Research Program of China under Grant No. 2007CB616906, the Program for Changjiang Scholars and Innovative Research Team in University, and Australian Research Council under Grant No. DP0559872, DP0881739. （）
