Research on eddy current displacement sensor for electrohydraulic valves

HU Jing-xiang1; LI Qi-peng2; YU Jia-hong3

doi:10.13873/j.1000-97872007.10.026

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Research on eddy current displacement sensor for electrohydraulic valves

更新时间：2025-09-11

- Research on eddy current displacement sensor for electrohydraulic valves
- Issue 10, Pages: 66-68(2007)
- 作者机构：
  
  1. 湖南工程学院
  2. 浙江大学流体传动及控制国家重点实验室
  3. 浙江工贸职业技术学院
- 作者简介：
- 基金信息：
- DOI：10.13873/j.1000-97872007.10.026
  CLC： TP212
- Published：2007
- 稿件说明：
移动端阅览
[1]胡竟湘,李其朋,余加红.液压阀电涡流位移传感器的研究[J].传感器与微系统,2007(10):66-68.

HU Jing-xiang1, LI Qi-peng2, YU Jia-hong3. Research on eddy current displacement sensor for electrohydraulic valves[J]. 2007, (10): 66-68.
[1]胡竟湘,李其朋,余加红.液压阀电涡流位移传感器的研究[J].传感器与微系统,2007(10):66-68. DOI： 10.13873/j.1000-97872007.10.026.

HU Jing-xiang1, LI Qi-peng2, YU Jia-hong3. Research on eddy current displacement sensor for electrohydraulic valves[J]. 2007, (10): 66-68. DOI： 10.13873/j.1000-97872007.10.026.

摘要

检测液压阀芯位移的耐高压差动变压器式位移传感器频响低

不能满足高频响液压阀的需要

电涡流位移传感器不耐高压

且温度漂移严重难以在液压阀中使用

提出一种新型耐高压电涡流位移传感器的结构

建立了数学模型

进行了理论分析和磁场有限元仿真工具进行了仿真;理论分析和实验结果表明:该位移传感器具有良好的线性、工作量程大

可有效应用于高压环境下阀芯的位置检测。

Abstract

Owing to either the low frequency responses of LVDT for position detection of electrohydraulic valve spools or the incapability of working under high pressure and severe temperature drift of eddy current sensors

a new high-pressure eddy current displacement sensor is presented.Theoretical analysis and magnetic field simulation based on finite element method is given.Both the simulation and experimental results show that the sensor has good linearity

wide operating range

and can be suitable for detecting the position of spools under high pressure.

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references

耐高压电涡流位移传感器 [P]. 丁凡,李其朋,翁振涛,毕晴春. 中国专利:CN1587893,

电涡流位移传感器的温度补偿方法 [P]. 丁凡,李其朋,翁振涛,毕晴春. 中国专利:CN1587894,

传感器与传感器技术[M]. 科学出版社 , 何道清编著, 2004

传感器与应用电路设计[M]. 科学出版社 , 赵继文主编, 2002

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