作者：朱胜平，徐东海，马华超，任浩，周俊
单位：宁波中车时代传感技术有限公司，浙江宁波 315021
中图分类号：TP212.1       
文献标识码：A       
文章编号：1006-883X(2018)05-0007-06
收稿日期：2018-03-26

摘要：针对特殊应用环境的霍尔电流传感器叠片铁芯磁路结构对传感器基本性能的影响进行分析。通过电磁场的基本理论，应用安培环路定律以及基尔霍夫磁路定律，推导出影响磁路性能的方程。结合Maxwell仿真工具，对于现有磁路结构进行仿真分析。提出环路截面不均匀、叠片间隙等影响磁路性能的因素，通过对其进行优化设计，改善各个影响因素。将优化后的磁路应用到传感器样机，使传感器的精度提升至0.04%，零点性能更加稳定。
关键词：叠片铁芯；磁路优化；Maxwell仿真；霍尔传感器

Simulation Analysis and Optimization of Magnetic Circuit for Hall Sensors
ZHU Sheng-ping, XU Dong-hai, MA Hua-chao, REN Hao, ZHOU Jun
Ningbo CRRC Times Transducer Technique Co., Ltd., Ningbo 315021, China
Abstract: The influence of laminated-core magnetic circuit structure of Hall current sensors applied in special environment on their fundamental performance is analyzed in this paper. The equation affecting the performance of magnetic circuits is deduced by applying Ampere circuit law and Kirchhoff magnetic law based on the basic theory of electromagnetic field. The existing magnetic circuit is simulated with Maxwell. The factors affecting the performance of magnetic circuit, such as uneven cross section of magnetic flux linkage and laminated core gap, are pointed out and optimized so as to improve the performance. The optimized magnetic circuit is applied to the sensor prototypes, and the precision of the sensors is increased to 0.04%, and the zero performance is more stable.
Key words: laminated magnetic core; magnetic circuit optimization; Maxwell simulation; Hall sensor

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备注：2018年 第24卷 第05期