盘式异步磁力联轴器三维气隙磁场计算及试验研究  

Theoretical arithmetic and experimental study on 3D air gap magnetic field for axial asynchronous permanent magnet couplings

作　　者：杨超君[1] 管春松[1] 徐燕飞[1] 胡友[1] 

机构地区：[1]江苏大学机械工程学院,江苏镇江212013

出　　处：《电机与控制学报》2013年第1期51-57,共7页Electric Machines and Control

基　　金：国家自然科学基金(51075189)

摘　　要：为研究盘式异步磁力联轴器气隙内磁场的空间分布,首次利用等效电流模型对联轴器的气隙磁场建立三维解析模型,推导出了气隙处任意场点的磁感应强度解析公式。针对一台18极的盘式异步磁力联轴器,采用Matlab编程求解得出了气隙磁场沿轴向、径向及周向的三维空间分布。同时采用试验测量装置对不同气隙厚度下的气隙磁场分布进行了三维磁场测量,测量结果与解析结果具有很好的一致性,都表明轴向磁场为气隙磁场的主要分量,并且轴向磁场的波形为近似正弦波,可传递稳定的转矩;随着气隙厚度的增大,气隙磁密幅值将会迅速降低。通过对三维气隙磁场的分析,为联轴器的转矩特性计算和结构优化提供了依据。In order to find out the spatial distribution of the air gap magnetic field in the axial asyn- chronous permanent magnet coupling, the formula of theoretical arithmetic on air gap magnetic field based on the 3D model of the coupling was deduced by equivalent surface current model, from which spatial distribution of the magnetic flux density from the axial direction, radial direction and circumferential di- rection was obtained by Matlab programming. Then the static magnetic field measurements were tested by 3 D Gauss meter, and the results of test and of calculation agreed fairly closely. The results indicate that axial magnetic field is the main part of the air gap magnetic field and the waveform is approximated to sine waves, by which the stable torque is passed ; meanwhile the magnetic flux density is decreased quickly as the air gap thickness increases. The theoretical analysis and experimental validation of air gap magnetic field lays the foundation for the torque calculation and structural optimization of the coupling.

关 键 词：盘式异步磁力联轴器 三维磁场 等效面电流 气隙磁场 解析计算 试验 

分 类 号：TH133.4[机械工程—机械制造及自动化]