基于磁场积分方程法的磁通门瞬态分析

摘要

The static integral equation method can be used to simulate and design the fluxgate,which reduces the computation time and shows a satisfactory accuracy. However,the effect of frequency on fluxgate was not considered accurately based on static integral equation method,so it applies only to the quasi static analysis and can’t be used to carry out the transient analysis of fluxgate. In order to solve this problem,the paper firstly studied the quasi static analysis of fluxgate with integral equation method according to the characteristics of fluxgate core. Based on the above work,the mathematical model was modified for fluxgate transient analysis. Finally a rod core fluxgate as an example was analyzed to validate the modified model. The simulation results agree well with experimental results.%利用静态积分方程法来分析设计磁通门，虽然能够使计算时间大大减少，而且在精度方面也可以达到磁通门的要求，但是静态积分方程法没有准确考虑频率的影响，只能对磁通门进行准静态分析，而对磁通门进行瞬态分析的问题未能得到解决。本文根据磁通门铁芯特点，研究了基于磁场积分方程法的磁通门准静态分析模型，在此基础上，对其数学模型改进，建立了可以对磁通门进行瞬态分析的数学模型。最后以长条形磁通门为例验证了模型，仿真与实验结果符合良好。