基于变尺寸涡流环模型的电涡流传感器仿真  

Simulation of eddy current sensor based on variableeddy current ring

作　　者：姜磊 王黎明[1] 张小章[2] JIANG Lei;WANG Liming;ZHANG Xiaozhang(Research Institute of Physical and Chemical Engineering,Tianjin 300180,China;Department of Engineering Physics,Tsinghua University,Beijing 100084,China;Key Laboratory of Particle Transport and Enrichment,Tianjin 300180,China)

机构地区：[1]核工业理化工程研究院,天津300180 [2]清华大学工程物理系,北京100084 [3]粒子输运与富集技术重点实验室,天津300180

出　　处：《传感器与微系统》2020年第5期11-13,20,共4页Transducer and Microsystem Technologies

基　　金：天津市企业博士后创新项目择优计划资助项目(2016);中核集团青年英才计划资助项目(2018)。

摘　　要：提出一种具有距离依赖特性的变尺寸涡流环计算模型,研究了内外半径对距离的依赖关系并拟合得到尺寸修正计算公式。基于MATLAB软件编写数值仿真程序,分别采用固定尺寸和变尺寸涡流环模型仿真计算得到传感器输入输出曲线。为验证模型正确性,建立了电涡流传感器原理实验装置,实测得到传感器输入输出关系并与仿真结果进行了对照。研究结果表明:采用变尺寸涡流环模型的仿真结果精度更高。An eddy current ring computation model with variable size which has distance-depending property is proposed.The depending relationships between the inner radius and the outer radius,and the distance are calculated,respectively,and get the correcting formulas by fitting.In order to validate the new model,an eddy current sensor experimental device is built.Based on MATLAB,input and output curve of sensor is obtained by simulation and calculation by fitted size and variable size eddy current ring model.The input-output characteristic curves are both simulated with the two different models and compared with the experimental curve.It is proved that the eddy current ring model with variable size parameters has higher precision.

关 键 词：电涡流传感器 涡流环 修正公式 变尺寸 灵敏度 仿真 

分 类 号：TP212.9[自动化与计算机技术—检测技术与自动化装置]