沿任意方向运动的磁偶极子感应电场特性  

Analysis on characteristics of induced electric field by magnetic dipole moving along arbitrary direction

作　　者：汪小娜[1] 肖昌汉[1] 王向军[1] 嵇斗[1] 

机构地区：[1]海军工程大学电气与信息工程学院,湖北武汉430033

出　　处：《舰船科学技术》2012年第12期19-23,共5页Ship Science and Technology

基　　金：中国博士后科学基金资助项目(20080441290);国家自然科学基金资助项目(51007093)

摘　　要：磁偶极子是磁理论研究最基本的磁单元。根据相对论电磁变换推导了单个磁偶极子沿任意方向匀速运动时产生的感应电场三分量的计算公式,并通过坐标变换,得到了感应电场在惯性系中的空间分布,解决了由高斯定理只能计算沿极矩方向运动的磁偶极子感应电场的缺陷。利用Matlab语言进行仿真,直观展示了沿任意方向运动的磁偶极子感应电场分布特征,并画出了感应电场的电力线分布,分析了感应电场随着磁偶极子运动方向与极矩方向间夹角的变化而变化的规律,为通过磁偶极子拟合磁性物体的磁场分布从而研究其感应电场提供了参考。The magnetic dipole was the basic unit to research magnetic theory. According to the relativistic transform theory the three parts of the electric field produced by an equable moving magnetic dipole along arbitrary direction were gained. Based on coordinate transformation the magnitude of induced electric field in inertial coordinate was gained. The limitation of electric field produced by a magnetic dipole moving only along magnetic moment direction was avoided. Applying Matlab the characteristics of the induced electric field were given and the electric force line was offered. The variety of induced electric field changing along with the different moving direction was analyzed. It provided reference for study the magnetic bodies based on simulating their magnetic field by dipoles distribution.

关 键 词：磁偶极子 感应电场 相对论 电磁变换 电力线 

分 类 号：TM15[电气工程—电工理论与新技术]