螺线管微线圈集总电参数的测量技术研究

Measurement of Lumped Electrical Parameters for Solenoid Microcoils

实际应用中,螺线管微线圈的集总电参数测量十分困难且不准确。为解决此问题,利用经验公式建立了基于物理放大法的微线圈集总电参数测量模型,同时使用有限元仿真计算微线圈放大后的集总电参数,拟合得到集总电参数与放大倍数的回归模型。制作了微线圈放大10倍的原型,测量了其集总电参数,利用测量模型等效计算出微线圈的集总电参数,与仿真值相比,最大误差为9.33%,表明物理放大法可用于实际测量微线圈的集总电参数。

In practical applications,it is extremely difficult to enable an accurate measurement of the lumped electrical parameters for a solenoid microcoil.In order to solve this problem,a scale-up methodology based on the empirical formulas was used to establish the measurement model of the lumped electrical parameters for the microcoils.A regression model between the lumped electrical parameters and scale-up factors was obtained by using the curve fitting,whereas the lumped electrical parameters of the scale-up coils were calculated by finite element method.A prototype with a scale-up factor of 10 was fabricated and measured so that the lumped electrical parameters of the microcoil were figured out based on the proposed measurement model.Compared with the simulation results,the maximum errors are 9.33%,showing that the proposed scale-up methodology is available to obtain the lumped electrical parameters of solenoid microcoils.