动态磁导率的反正切模型研究及其在时间差型磁通门的应用

为更好研究时间差型磁通门的特性,对磁滞回线模型进行研究.针对反正切模型曲率固定导致磁导率与实际磁芯存在偏差的不足,提出基于动态磁导率的磁滞回线反正切模型.将模型相对偏差由原来的10％降低至3％以内.利用动态磁导率模型对时间差磁通门的输出响应进行研究,模型计算结果与仿真偏差小于5％.动态磁导率模型为磁芯研究提供了理论依据,同时其对磁导率的精确逼近可以使利用磁导率计算的磁传感器研究结果更加精确且符合实际.

On the Arctangent Model with Dynamic Permeability and Application on the Time Difference Fluxgate

In this paper, research on the model of magnetic hysteresis loop is conducted for a better study on the characteristics of time difference fluxgate. Traditionally, the arctangent model with a fixed curvature suffers from a discrepancy between the permeability and actual magnetic core. Therefore, an improved arctangent model with dynamic permeability is proposed, which reduces the relative deviation from 10% to 3% or below. With this improved model, research on the output resonance of time difference fluxgate is conducted and shows that deviation of model computation than simulation is lower than 5%. This improved model provides a theoretical basis for research on the magnetic core, and meanwhile, an accurate approximation of permeability renders more accurate and practical results when permeability is used in computation.