瞬态脉冲磁场频谱分析  

Spectrum Analyses of Transient State Pulse Magnetic Field

作　　者：王震[1] 米东[1] 徐章遂[1] 刘美全[1] 郝建忠[1] 

机构地区：[1]军械工程学院电气工程系,河北石家庄050003

出　　处：《仪表技术》2010年第9期49-50,53,共3页Instrumentation Technology

摘　　要：当线圈中通过上升沿为纳秒级的脉冲电流时,在脉冲电流的激励下,线圈中产生感应脉冲磁场,该磁场以介质磁化的方式向外传播,从而产生激磁波。利用傅里叶积分对脉冲磁场进行频谱分析,讨论了脉冲磁场大小随所选择频率上限之间的关系。When nanosecond-stage pulsed electricity is transiting in coil loop,there will be an inductive pulsed magnetic field.This magnetic field spreading follows the way of magnetizing material,and produces shock magnetic impulse wave（SMIW）.The DFT is used to analyze the spectrum of pulsed magnetic field.The relationship between the size of pulsed magnetic field and upper limit of the frequency is discussed.

关 键 词：激磁波 脉冲磁场 频谱 傅里叶积分 

分 类 号：TM936[电气工程—电力电子与电力传动]