中文摘要：

采用被动式电磁阻尼器控制磁悬浮轴承转子系统振动。首先,设计了一个被动式电磁阻尼器,可以通过电流变化控制阻尼力。然后,基于通用有限元软件NASTRAN,对磁悬浮轴承转子系统分析了不同阻尼下的不平衡响应仿真。最后通过系统高速旋转实验,研究了不同阻尼器控制参数下该系统的不平衡响应。仿真与试验结果表明,增加被动式电磁阻尼器能够改善系统的动态性能并降低转子的不平衡振动,使转子成功越过一阶弯曲临界转速15 600 r/min,稳定运行在21 000 r/min。

英文摘要：

A passive electromagnetic damper is designed to control the vibration of the magnetic bearing rotor system.Firstly,the passive electromagnetic damper is presented to support the rotor,and the damper force produced by the passive electromagnetic damper is controlled by the current.Secondly,based on the finite element software NASTRAN,the unbalance responses of the rotor system are calculated on different damper values.Finally,the experiments of unbalance responses are done at the high speed with different dampers.Simulations and experiments show that the unbalance vibration can be suppressed by the passive electromagnetic damper,and the magnetic bearing rotor system with the passive electromagnetic damper can pass through the first bending critical speed 15 600 r/min and run stably at the speed of 21 000 r/min.