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中文摘要：
研究了交流磁扰动对高温超导块材和永磁体之间悬浮力的影响。实验分析了在零场冷（ZFC）条件下,不同频率的交流磁场扰动下的悬浮力曲线;另外还研究了交流磁扰动在永磁体下降和上升过程中对悬浮力的影响,发现上升过程中悬浮力受交流磁场影响较大,而在下降过程中影响则较为不明显,同时随着交流磁场幅值的增大,悬浮力的滞回曲线逐渐加宽。说明交流磁场导致了超导块磁滞损耗的增加,对超导磁浮特性的研究具有理论意义。
英文摘要：
Behavior of magnetic levitation force between a HTS bulk and a permanent magnet in changing alternating magnetic disturbance is investigated systemically.The levitation force was measured under the different frequency of alternating magnetic field in zero field cooling（ZFC） model.The results show the influence is not obvious in the falling process while significant obvious in the rising process.The levitation force hysteresis curves were gradually widened when the alternating magnetic amplitude increases.This is due to external alternating magnetic field caused by hysteresis strengthening of superconductor bulk.It was also observed that the levitation force is influenced by the applied magnetic field most seriously under frequency of 300Hz.
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