Abstract：To study the effects of structural parameters of probe coil in eddy current sensor on the performance detection, based on electromagnetic field theory, the finite element analysis was employed, with the help of finite element simulation software COMSOL to establish the detection model of eddy current sensor. By means of simulation, the electromagnetic characteristics of eddy current sensor probe and probe coil, and such structural parameters affecting its performance as inner radius, outer radius, thickness were studied. The results show that the impedance of eddy current sensor probe coil rises with the increase of the coil inner radius and outer radius, and the decrease of thickness. The bigger the inner radius, the outer radius and the thinner the thickness are, the higher the sensitivity of the eddy current sensor is, and the more obvious the impact of its thickness on the sensitivity of the sensor is. The findings offer a certain reference value for optimizing design of eddy current sensor used to defect detection of steel gate.
徐琳, 王恒, 黄祯, 李伯全, 肖逸凯, 盛嘉端. 基于COMSOL有限元法的电涡流传感器仿真[J]. 排灌机械工程学报, 2015, 33(12): 1097-1104.
XU Lin, WANG Heng, HUANG Zhen, LI Boquan, XIAO Yikai, SHENG Jiaduan. Simulation of eddy current sensor based on COMSOL finite element method. Journal of Drainage and Irrigation Machinery Engin, 2015, 33(12): 1097-1104.
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