Abstract:

Based on the eddy current principle, a novel journal eddy current damper for rotor systems was presented. The basic structure and the dynamics model of the radial eddy current damper were analyzed. The frequency response functions of a flexible rotor system supported on the radial eddy current damper in the stationary, the rotor motion orbits at the steady state rotational speeds and the unbalance response curves in the slow acceleration operation were measured for different magnetic flux densities. It is shown that the dynamics behavior of the radial eddy current damper is easily controlled by the applied magnetic field, and the radial eddy current damper can significantly reduce the vibration of the rotor system.

Key words: eddy current damper, rotor, vibration, rotordynamics

摘要：

基于电涡流原理提出了一种新型的转子系统径向电涡流阻尼器，分析了这种阻尼器的结构和动力模型，并在不同磁场强度条件下测量、研究了径向电涡流阻尼器所支撑的柔性转子系统在非旋转状态下的传递函数、在恒定转速下的运动轨道,以及在慢加速运行过程中的不平衡响应。结果表明：这种新型的径向电涡流阻尼器不仅具有结构简单、无需工作介质、无机械接触等特点，而且还可以对其动力特性进行控制，能够显著地减小转子系统的振动。

关键词: 电涡流阻尼器, 转子, 振动, 转子动力学