摘要
圆锥形磁悬浮轴承只用一对径向轴承即可完成主轴的径向与轴向控制,但由于其定、转子铁心呈锥形结构,使轴向与径向间存在耦合,增加了分析计算的复杂性,同时对其电磁场的分析必须采用三维模型。利用ANSYS有限元软件对磁悬浮轴承进行三维电磁场计算,分析了磁感应强度的空间分布、轴承径向与轴向间的耦合效应,同时计算了电磁力随控制电流和轴承位置的变化关系,并与磁路法的结果进行了比较,在此基础上得出了磁悬浮轴承的电流刚度系数和位置刚度系数。
Conical magnetic beatings require only two radial bearings to fulfill shaft control in both axial and radial direction. Due to coupling between axial and radial direction, the analysis and calculating for conical magnetic bearings become more complex. A 3 - D FEM model was set up for the analysis of electromagnetic field. The 3 - D FEM calculation based on software ANSYS for conical magnetic bearings was discussed. Space distribution of flux density and coupling effects between axial and radial direction were studied. The relationship between electromagnetic force changing with control current and rotor displacement was simulated and then the simulated results were compared with results based on magnetic circuit calculation. Furthermore, current stiffness and displacement stiffness were obtained.
出处
《武汉理工大学学报（信息与管理工程版）》
CAS
2010年第1期58-61,84,共5页
Journal of Wuhan University of Technology：Information & Management Engineering
关键词
圆锥形磁悬浮轴承
三维有限元分析
电流刚度
位置刚度
conical magnetic beating
3 - D FEM analysis
current stiffness
displacement stiffness
