基于等效磁化强度法的一种电磁式角振动台气隙磁场分析方法

发布时间：2018-07-06 14:35

本文选题：电磁学 + 角振动台　；参考：《兵工学报》2017年01期

【摘要】：针对有限元法求解气隙磁场的磁路几何模型占用内存空间多和计算时间长等问题,提出一种基于等效磁化强度法求解电磁式角振动台气隙磁场分析方法。基于等效磁化强度法建立矢量磁位的微分方程组,得到包含磁路几何参数的磁感应强度解析表达式;与有限元法计算结果对比,验证等效磁化强度法的正确性;采用等效磁化强度法对磁路参数进行优化。分析结果表明:当气隙厚度保持不变时,随着永磁体扇形角的增加,气隙中有效均匀磁感应强度的区域变宽,而随永磁体厚度的增加,气隙磁感应强度将增强;当永磁体扇形角和厚度保持不变时,磁感应强度随气隙厚度的增加而减小。该方法可以快速分析磁路结构参数变化对气隙磁感应强度的影响程度,为优化设计电磁式角振动台磁路结构提供理论参考。
[Abstract]:In order to solve the problems of the magnetic path geometry model of air gap magnetic field using finite element method, a method based on the equivalent magnetization method is proposed to solve the magnetic field analysis of the air gap of the electromagnetic angular vibration table. The differential equations of vector magnetic potential are established based on the equivalent magnetization method, and the analytical expression of magnetic induction intensity including the geometric parameters of the magnetic circuit is obtained, and the validity of the equivalent magnetization method is verified by comparing the calculated results with the finite element method. The equivalent magnetization method is used to optimize the magnetic circuit parameters. The results show that when the thickness of the air gap remains constant, the effective and uniform magnetic induction intensity in the air gap becomes wider with the increase of the fan angle of the permanent magnet, but with the increase of the thickness of the permanent magnet, the intensity of the air gap magnetic induction will increase. When the fan angle and thickness of the permanent magnet remain constant, the magnetic induction intensity decreases with the increase of the air gap thickness. This method can rapidly analyze the influence of the change of magnetic circuit structure parameters on the magnetic induction intensity of air gap and provide a theoretical reference for the optimization design of magnetic circuit structure of electromagnetic angular vibration table.
【作者单位】：中国计量大学工业与商贸计量技术研究所;浙江大学机械工程学院浙江省先进制造技术重点实验室;
【基金】：国家自然科学基金项目(51375443) 国家重大仪器设备开发专项项目(2013YQ470765) 浙江省自然科学基金杰出青年基金项目(LR12E05001) 浙江省先进制造技术重点实验室开放基金项目(2016KF05)
【分类号】：TB534.2

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