基于霍尔元件的液压阀阀芯位移传感器

摘要

In order to resolve the problem of hydraulic valve spool displacement detection,a structure of spool sensor based on Hall element is proposed. The overall structure and working principle of the withstanding voltage Hall displacement sensor is presented. The finite element model of the sensor is modeled. The relation between magnetic flux density and spool position is analyzed. A novel displacement sensor for spool is developed, and the experiment is investigated. The results show that the linearity of the sensor is 1 % in the range of 2mm,the sensor can be used for the proportional valve spool displacement detection.%针对液压阀阀芯位移检测问题,提出了一种基于线性霍尔元件的液压阀阀芯位移传感器结构.介绍了新型耐高压霍尔传感器的结构组成和工作原理；建立了传感器磁场有限元仿真模型,仿真分析了磁感应强度与阀芯位置之间的关系；最后研制了新型耐高压位移传感器,并进行了实验研究,结果表明:在2mm范围内传感器的线性度为1％,可用于比例阀芯位移检测.