中文摘要：

设计一种用于人工心脏的非接触式涡电流位移传感器。针对人工心脏磁悬浮系统特有的钛合金隔层结构，采用有限元分析涡电流位移传感器磁场，得到其结构参数；同时研制能实时监控传感器线圈绕制的装置，以提高线圈阻抗的一致性。经对传感器性能测试，结果显示所设计的涡电流位移传感器标准偏差为3．8％，灵敏度高于10％，能满足人工心脏磁悬浮系统的要求。

英文摘要：

Noncontact eddy current displacement sensor was designed for the Maglev system of the ventricle assist device（VAD）. With regard to the special structure in which there was a titanium alloy frame between the displacement sensor and VAD＇s rotor, this paper analyzed the sensor magnetic field by using finite element method to obtain structural parameters of sensor, built a device to monitor coil winding for improving the impedance consistency. Performance test of sensor coils shows that the standard deviation of sensor coils is 3. 8%, the sensitivity is higher than 10% ,and the good properties are feasible for the Maglev system of VAD.