永磁轴承轴向悬浮力与刚度特性分析

Analysis of axial suspending force and stiffness of permanent magnet bearing

对常规磁轴承轴向悬浮力与刚度进行了解析计算与仿真分析。介绍了一种新型轴向永磁悬浮轴承及工作原理,运用Ansoft软件Maxwell 3D对新型永磁悬浮轴承的轴向磁悬浮力与刚度进行了有限元仿真分析,并完成了样机。实验结果表明,轴向承载力的计算值与实测值基本吻合;在偏心距的实际应用范围内,永磁轴承的径向刚度为常量;这种新结构磁悬浮轴承具有较大的轴向力,能够满足工程需求。

Axial suspending force and stiffness of conventional magnetic bearing is analytically calculated and simulated. A new type of axial permanent suspending beating and operational principle is introduced. The axial suspending force and stiffness of the permanent suspending bearing is analyzed using Maxwell 3D of Ansoft software and prototype is made. The experimental result shows that the calculated axial capacity is agreeable with the measured data. In practical applications within the eccentricity scope, the radial stiffness of permanent magnet bearing is constant. The new magnetic bearing features a high axial force meeting engineering requirement.