Impedance Characteristics Analysis of the Non-Contact Magnetic Type Position Sensor
Impedance Characteristics Analysis of the Non-Contact Magnetic Type Position Sensor
复制标题
非接触式磁性位置传感器的阻抗特性分析
DOI：
10.1541/ieejsmas.128.435
复制
发表时间：
2008
影响因子：
--
通讯作者：
Y. Kawase
中科院分区：
文献类型：
--
作者：
Seung;K. Hirata;T. Ota;Y. Mitsutake;Y. Kawase
指出了传统的机械接触式电位器作为位置传感器存在的接触可靠性、使用寿命等问题。因此，我们正在开发利用阻抗随位移变化的非接触式磁性线性位置传感器。本文评估了传感器芯材的交流磁化特性，并研究了如何在三维有限元分析中使用复磁导率。此外，利用实测磁芯的复磁导率计算了非接触式磁位置传感器的阻抗特性。结果表明，将样机测量值与计算值进行比较的方法是有效的。
The mechanical contact type potentiometer that has been conventionally used as a position sensor, is pointed out the problems of contact reliability, life time, and so on. Therefore, we are developing the non-contact magnetic type linear position sensor using impedance change according to the displacement.In this paper, we evaluate AC magnetization characteristic of the core material used for a sensor, and investigate how to use complex magnetic permeability in the three-dimensional finite element analysis. In addition, the impedance characteristic of the non-contact magnetic type position sensor is calculated using the measured complex magnetic permeability of the core. As a result, we obtained the validity of the method that compares the measurements of the prototype to calculated value.