高矫顽力稀土磁体脉冲磁化场脉宽的确定

应用科学学报 ›› 1993, Vol. 11 ›› Issue (2): 131-135.

高矫顽力稀土磁体脉冲磁化场脉宽的确定

富知愚, 许梦杰

上海科学技术大学

收稿日期:1991-09-29 修回日期:1992-09-11 出版日期:1993-06-30 发布日期:1993-06-30

DETERMINATION OF THE PULSE WIDTH OF PULSED MAGNETIZING FIELD FOR A RARE EARTH MAGNET WITH HIGH COERCIVE FORCE

FU ZHIYU, XU MEIJIE

Shanghai University of Science and Technology

Received:1991-09-29 Revised:1992-09-11 Online:1993-06-30 Published:1993-06-30

摘要/Abstract

摘要： 介绍了产生脉冲磁化场的有效装置,导出脉冲磁化场的近似表达式及脉冲宽度与峰值场强和电路元件的关系.提出了计及磁滞和涡流效应的描述磁化过程的物理模型,并给出了数值计算的结果.对一些特殊磁体,确定了必需的脉冲宽度,得到了有用的设计参量.

关键词: 稀土磁体, 脉冲磁化

Abstract: An effective device which can generate the pulsed magnetizing field is shown. The approximate expression for the pulsed magnetizing field is derived, and its pulse width and peak intensity related to the circuit elements are given. A reasonable physical model which describes the magnetization process and involves the magnetic hysteresis and eddy current is presented, and the numerical computation is made. The pulse field widths which are required to magnetize the specific magnets are determined, and the useful design parameters are obtained.

Key words: rare-earth magrets, Impulse magnetization

富知愚, 许梦杰. 高矫顽力稀土磁体脉冲磁化场脉宽的确定[J]. 应用科学学报, 1993, 11(2): 131-135.

FU ZHIYU, XU MEIJIE. DETERMINATION OF THE PULSE WIDTH OF PULSED MAGNETIZING FIELD FOR A RARE EARTH MAGNET WITH HIGH COERCIVE FORCE[J]. Journal of Applied Sciences, 1993, 11(2): 131-135.