推力磁轴承的力学特性及其对径向磁轴承的影响

MECHANICAL CHARACTERISTICS OF THRUST MAGNETIC BEARING AND ITS EFFECT ON RADIAL MAGNETIC BEARINGS IN THE SYSTEM

讨论了计入推力盘静态倾斜影响后的推力磁轴承的力学特性，导出了其静、动特性的系数公式，并结合某涡 轮膨胀机的推力磁轴承进行了实例计算。结果表明，推力盘的静态倾斜对推力磁轴承的力学特性产生显著影响， 并改变径向磁轴承的静负荷分配，使得推力磁轴承与径向磁轴承之间产生强烈的耦合作用。该结果可用于５自由 度磁悬浮轴承－转子系统的机电耦合动力学研究。

Static and dynamic mechanical characteristics of a thrust magnetic bearing are studied due to the runner disk inclinatiom. Application refers to a thrust magnetic bearing for a turbo - expander/compressor. The static tilt of the runner disk has remarkable influence on the mechanical characteristics of thrust magnetic bearing, changes the static load distribution between two radial magnetic bearings and exerts violent coupling effect among a thrust magnetic bearing and two radial magnetic bearings. Such a finding can be used for the coupled electromechanical dynamics analysis of rotor system equipped with magnetic bearings.