异极永磁偏置径向混合磁轴承及其性能分析  

Heterpolar Permanent Magnet Biased Radial Hybrid Magnetic Bearing and Its Performance Analysis

作　　者：刘钙 马志豪 朱熀秋[1] LIU Gai;MA Zhihao;ZHU Huangqiu(School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China)

机构地区：[1]江苏大学电气信息工程学院,江苏镇江212013

出　　处：《轴承》2022年第3期36-40,共5页Bearing

基　　金：国家自然科学基金资助项目(51675244,61973144);江苏高校优势学科建设工程(三期)资助项目(PAPD-2018-87)。

摘　　要：介绍了异极永磁偏置径向混合磁轴承的结构和工作原理,利用等效磁路法建立悬浮力计算模型,理论分析说明异极磁轴承比三极磁轴承最大承载能力提高了33.3%,通过有限元分析得出异极磁轴承能得到比三极磁轴承更好的悬浮力与电流线性关系。搭建试验台对理论分析和仿真结果进行验证,异极磁轴承悬浮力与电流线性关系更好,最大承载力提高了29.4%,进一步说明了异极磁轴承的优越性。The structure and working principle of heterpolar permanent magnet biased radial hybrid magnetic bearing are introduced,and the mathematical models of levitation forces are established by equivalent magnetic circuit method,the theoretical analysis shows that the maximum load capacity of heteropolar magnetic bearing is 33.3%higher than that of three pole magnetic bearing,through finite element analysis,it is concluded that the linearity of levitation force-current characteristic curve of heteropolar magnetic bearing is better than that of three pole magnetic bearing.A test-bed is built for verification of theoretical analysis and simulation results.The linearity of levitation force-current characteristic curve of heteropolar magnetic bearing is better,and the maximum load capacity is increased by 29.4%,which further explain the advantages of heteropolar magnetic bearing.

关 键 词：滑动轴承 磁力轴承 悬浮力 电流 承载能力 理论分析 仿真 试验 

分 类 号：TH133.31[机械工程—机械制造及自动化] O313[理学—一般力学与力学基础]