磁通门磁强计激励电路的分段解析模型

磁通门磁强计激励电路的分段解析模型 A Piecewise Analytical Model of the Fluxgate Magnetometer Excitation Circuit 蒋顺平 JIANG Shunping 1 first-author 曹大平 CAO Daping 1 刘斯 LIU Si 1 武汉大学物理科学与技术学院 武汉大学物理科学与技术学院 School of Physics and Technology,Wuhan University School of Physics and Technology,Wuhan University 针对数值仿真方法中存在不易掌握各个元件参数如何影响激励电流的问题,本文在磁芯磁化曲线折线模型的基础上,采用等效电阻替代磁滞效应的方法建立了磁滞回线模型,依此化简激励电路并进行分段解析求解.该方法的计算结果与实际测试相吻合,能为激励电路参数设计提供有效的方法. It is not easy to grasp how the parameters affect the excitation circuit by using numerical simulation method to study the excitation circuit.On the basis of broken line model of magnetism core,this paper uses the method of replacing hysteresis by equivalent resistance to build a simplified model of hysteresis loop,and then simplifies the excitation circuit and gets its solution.The results and the actual tests are matched.The method provides a powerful help to design parameters for the excitation circuit. 磁通门 磁强计 磁滞效应 激励电路 fluxgate magnetometer hysteresis excitation circuit 10.14188/j.1671-8836.2010.05.023 TP212.1 国家高技术研究发展计划（863）项目（2007AA12Z322） 2010-05-01 2021-04-01 5 56