磁力齿轮中调磁极片结构参数的数值模拟分析  

Numerical simulation and analysis of structural parameters of ferromagnetic pole pieces in magnetic gears

作　　者：杨超君[1] 李志宝[1] 周曰华[1] 胡友[1] 杨巧绒[1] 

机构地区：[1]江苏大学机械工程学院,江苏镇江212013

出　　处：《江苏大学学报（自然科学版）》2014年第1期80-86,共7页Journal of Jiangsu University：Natural Science Edition

基　　金：国家自然科学基金资助项目(51075189);江苏省自然科学基金资助项目(BK20131254)

摘　　要：为了改善磁力齿轮的转矩传递能力，研究调磁极片的调磁机理和结构要求，提出3种结构形式．针对调磁极片层叠结构出现的转矩传递能力不足等问题，采用瞬态有限元分析方法对调磁极片各部分的结构参数进行数值模拟．结果表明：磁力齿轮的输出转矩随调磁极片相对齿宽的增加先增大后减小，当相对齿宽在0．4～0．5时转矩较大，且变化相对平稳；磁力齿轮的输出转矩随调磁板片齿高的增加也是先增大后减小，在齿高为3mm时为最大，比试验参数下的模拟结果提高18％；输出转矩随着连接桥高度的增大而减小，消除连接桥可使输出转矩比试验参数下的模拟结果提高62％．In order to improve the torque transmission ability of magnetic gear, the magnetic field modula tion mechanisms and structure requirement were investigated to propose three kinds of structure of ferromag netic pole pieces. To improve the torque transmission capacity of stacked structure of ferromagnetic pole pieces, the structural parameters of ferromagnetic pole pieces were analyzed numerically by the finite ele ment method. The results show that the output torque of magnetic gear increases firstly and then decreases with the increase of the relative teeth width of the ferromagnetic pole pieces. The output torque is large when the relative teeth width is between 0.4 and 0.5, and the torque change is relatively stable. The out put torque increases firstly and then decreases with the increase of tooth height of ferromagnetic pole pieces. The maximum of output torque is obtained with the tooth height of 3 mm, and the output torque in creases by 18% more than that of simulation result of experimental. The output torque decreases with the increasing of connecting bridge height, and the torque increases by 62% more than that of simulation result of experiment without connecting bridge.

关 键 词：高性能同轴式磁力齿轮 调磁机理 参数优化 转矩 有限元分析 

分 类 号：TH311[机械工程—机械制造及自动化]