J Shanghai Jiaotong Univ Sci ›› 2023, Vol. 28 ›› Issue (5): 596-603.doi: 10.1007/s12204-022-2511-9

• • 上一篇    

双线圈电涡流传感器参数优化及精度提高方法研究

张振宁1,刘强2,吕春峰3,毛义梅1,陶卫1,赵辉1   

  1. (1.上海交通大学 仪器科学与工程系,上海200240;2. 山东航天电子技术研究所,山东 烟台264670;3. 上海海洋大学 工程学院,上海 201306)
  • 接受日期:2020-12-07 出版日期:2023-09-28 发布日期:2023-10-20

Parameter Optimization and Precision Enhancement of Dual-Coil Eddy Current Sensor

ZHANG Zhenning1(张振宁),LIU Qiang2(刘强), Lü Chunfeng3(吕春峰),MAO Yimeil(毛义梅),TAo Weil(陶卫),ZHAO Huil*(赵辉)   

  1. (1. Department of Instrument Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; 2. Shandong Institute of Space Electronic Technology, Yantai 264670, Shandong, China; 3. College of Engineering Science and Technology, Shanghai Ocean University, Shanghai 201306, China)
  • Accepted:2020-12-07 Online:2023-09-28 Published:2023-10-20

摘要: 为了提高涡流传感器在极端温度变化和航空航天有限空间等特殊环境下的测量精度,通过电磁场分析和有限元仿真建模,对传统双线圈涡流传感器探头的结构参数进行了优化,并进一步提出了确定双线圈探头最优线圈距离的准则。通过搭建实验平台对仿真结果进行了验证。在极端温度环境下,双线圈传感器在最佳距离下的全范围温度变化引起的位移测量误差小于单线圈传感器的21.0%。在此基础上,对结构优化后的双线圈涡流传感器的热稳定性进行了分析和验证。经过温度补偿后,双线圈涡流传感器位移测量精度要比单线圈传感器的精确14.9倍。提出的方法可为轴向双线圈涡流传感器探头的结构优化提供设计参考。

关键词: 涡流传感器,电磁场分析,有限元仿真,参数优化

Abstract: To enhance the measurement precision of eddy current sensor in particular environments such as extreme temperature changes and limited available space in aerospace, we optimized the structural parameters of the traditional dual-coil eddy current sensor probe by electromagnetic field analysis and finite element simulation modeling, and further presented the criteria for determining the optimal coil distance of the dual-coil probe. The simulation results are verified by setting up an experimental platform. For the extreme temperature environment, the displacement measurement error caused by the full range temperature variation of the dual-coil sensor under the optimal distance is less than 21.0% of that of the single-coil sensor. On this basis, we analyzed and verified the thermal stability of the structurally optimized dual-coil eddy current sensor. After temperature compensation, the displacement measurement accuracy can reach 14.9 times more accurate than that of the single-coil sensor. The method proposed in this paper can provide a design reference for the structural optimization of the axial dual-coil eddy current sensor probe.

Key words: eddy current sensor, electromagnetic field analysis, finite element simulation, parameter optimization

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