高速磁浮列车磁场测量系统的设计

高速磁浮列车磁场主要分布在列车和轨道之间很小的空气隙中,气隙磁场是一个恒定磁场和交变磁场的叠加磁场,而且磁感应强度很大,最大可达1．2T．针对高速磁浮列车磁场分布的特殊性,设计了一套两自由度磁场的闭环自动化测量系统。系统的设计基于PC机,可以实现对列车磁场中的固定点和一段距离上的磁场大小的自动化测量,并将测量数据存入数据库以便于进一步处理分析。在列车实验平台磁场的实际测量中,该系统性能稳定,测量范围可达0～1．5T．

Design of Measuring System on Magnetic Field of High Speed Maglev Train

The magnetic field of high speed maglev train mainly distributes in the small air gap between the train and the rail.The air gap magnetic field is composed by the steady magnetic field and alternationg magnetic field.The magnetic flux density is very great even to 1.2 T.In allusion to the particulatity of magnetic field distributing of high speed maglev train,a set of close loop automated magnetic field measuring system with two free degree is designed.This system is designed based on the PC.It can achieve automated measure for a fixed dot and distance of the magnetic field of the train,and put the measured data to the data-base to process later.In the actual measuring magnetic field of train experimental platform,this system is stable,measuring range is 0 to 1.5 T.