基于LabVIEW的磁浮车气隙传感器测试系统设计  

Design of test system for maglev train gap sensor based on LabVIEW

作　　者：何飞[1,2] 靖永志[1,2] 张昆仑[1,2] 

机构地区：[1]磁浮技术与磁浮列车教育部重点实验室,四川成都610031 [2]西南交通大学电气工程学院,四川成都610031

出　　处：《传感器与微系统》2016年第1期85-87,共3页Transducer and Microsystem Technologies

基　　金：国家自然科学基金资助项目(51377004)

摘　　要：磁浮车气隙检测常采用电涡流传感器，其在0-20mm量程范围内非线性严重，在实际工作时需要进行非线性校正，同时传感器工作环境恶劣，属于易损器件，需要经常检测维护。设计了一种气隙传感器测试系统，该系统以现场可编程门阵列（FPGA）作为控制核心，使用LabVIEW编写人机界面，实现了磁浮车气隙传感器输出特性的快速测试与在线校正。系统具有硬件结构简单、人机交互友好等特点。实验结果表明：该系统可方便监测传感器内部原始特性，经该系统校正后的传感器输出线性度良好，能满足磁浮列车悬浮控制系统要求。The eddy current sensor is employed to detect suspension gap in maglev train, and input-output characteristic of eddy current sensor is serious nonlinear when the gap range of 0 -20 mm, so the sensor should be calibrated, and sensor works in harsh environment and thus it is vulnerable and inspection and maintenance is needed sure. A gap sensor test system is designed to monitor the sensor characteristic and calibrate the nonlinear error. The main control unit of this system is designed with FPGA and the man-machine interface is compiled by LabVIEW,fast test and online calibration of output characteristic of maglev train gap sensor are realized. It has many advantages such as simple hardware structure and friendly man-machine interface. The experimental results show that the system can monitor the original characteristic of the sensor conveniently, output linearity of sensor corrected by this system is good, and it can meet the requirement of suspension control system perfectly.

关 键 词：磁浮车 气隙传感器 现场可编程门阵列 LABVIEW 非线性校正 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置]