高速磁浮列车悬浮间隙传感器的研究  

Research on Levitation Gap Sensor for High Speed Maglev Train

作　　者：吴峻[1] 周文武[1] 李璐[1] 

机构地区：[1]国防科技大学机电工程与自动化学院,湖南长沙410073

出　　处：《测试技术学报》2009年第5期466-470,共5页Journal of Test and Measurement Technology

基　　金：国家"863"计划资助项目(2004AA505220)

摘　　要：针对高速磁浮列车悬浮间隙传感器所面临的齿槽纹波效应、温度环境以及电磁干扰等特殊问题,分别从线圈设计、电路模型分析、软件补偿及抗电磁干扰等方面进行了研究.通过计算等效电感,设计了中间下陷形式的立体结构的检测线圈,使传感器在额定悬浮间隙下最终输出的纹波误差小于±0.4 mm;通过设计差分电路结构和温度修正表,解决了传感器温度漂移问题;通过设计8字结构线圈和电磁干扰滤波器,使传感器通过了电磁兼容测试.According to special problems of levitation gap sensor for high speed maglev train, including groove fluctuation effects, temperature environment and electromagnetic interference, we designed measurement coils, analyzed the circuit model, designed the software for compensation and resisted electromagnetic interference. By optimizing the calculation model of equivalent induction, the measurement coils were designed as three-dimensional coils with a sagging middle part. As a result, output fluctuation error is below ± 0. 4 mm at normal levitation gap. By differential structure and software compensation, the temperature drift of the sensor is solved. By designing 8-shaped coil structure and electromagnetic interference filter, the sensor is passed through electromagnetic compatible test.

关 键 词：间隙测量 齿槽效应 温度漂移 电磁干扰 高速磁浮列车 

分 类 号：TP212.13[自动化与计算机技术—检测技术与自动化装置]