摘要
To enhance the measurement precision of eddy current sensor in particular environments such asextreme temperature changes and limited available space in aerospace, we optimized the structural parameters ofthe traditional dual-coil eddy current sensor probe by electromagnetic field analysis and finite element simulationmodeling, and further presented the criteria for determining the optimal coil distance of the dual-coil probe. Thesimulation 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 underthe optimal distance is less than 21.0% of that of the single-coil sensor. On this basis, we analyzed and verified thethermal 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 axialdual-coil eddy current sensor probe.
作者
张振宁
刘强
吕春峰
毛义梅
陶卫
赵辉
ZHANG Zhenning;LIU Qiang;LU Chunfeng;MAO Yimei;TAO Wei;ZHAO Hui(Department of Instrument Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Shandong Institute of Space Electronic Technology,Yantai 264670,Shandong,China;College of Engineering Science and Technology,Shanghai Ocean University,Shanghai 201306,China)
基金
the National Natural Science Foundation of China(No.51975367)。
