基于霍尔元件的磁悬浮心脏泵转子径向位移检测  

Radical Displacement Detection for Rotor of Magnetic Bearings in Heart Pump Based on Hall Element

作　　者：肖林京[1] 李波[1] 孙传余[1] 文艺成 徐秀秀[1] 

机构地区：[1]山东科技大学机械电子工程学院,山东青岛266590

出　　处：《轴承》2016年第4期46-49,共4页Bearing

基　　金：山东省优秀中青年科学家科研奖励基金项目(BS2013NJ015);青岛市应用基础研究计划项目(15-9-1-66-jch);黄岛区科技项目(2014-1-39)

摘　　要：为实现人工心脏泵磁悬浮轴承转子位移的精确检测,利用ANSOFT/Maxwell 2D有限元软件,仿真了径向永磁轴承内永磁环位移变化对其空间外某点处磁感应强度的影响特性,得出二者间的数学关系;提出了一种基于霍尔传感器的磁悬浮轴承转子径向2自由度位移检测的方案,通过解耦处理得到径向2自由度位移量求解公式;通过有限元仿真软件验证了该径向位移检测方法的正确性。研究表明:基于霍尔传感器的位移检测方法操作简单,且能准确的检测到径向2自由度位移量。To achieve the accurate detection for rotor displacement of magnetic beatings in artificial heart pump, the in- fluencing characteristics of displacement variation of inner permanent magnetic ring of radial permanent magnetic bear- ings on magnetic induction intensity at some point outside the space is simulated by using finite element software An- soft/Maxwell 2D, the mathematical relationship is obtained. The scheme for two degree of freedom radial displacement detection of rotor for magnetic bearings is put forward based on Hall sensor. The solution formula for radial two degree of freedom displacement is obtained by using decoupling treatment, and the validity of radial displacement detection method is verified by using finite element simulation software. The studies show that the displacement detection method based on Hall sensor is simple to operate and can accurately detect two degree of freedom radial displacement.

关 键 词：径向永磁轴承 人工心脏泵 霍尔传感器 有限元分析 位移检测 耦合 

分 类 号：TH133.31[机械工程—机械制造及自动化] R318.11[医药卫生—生物医学工程]