Rotors supported on gas foil bearings have low damping characteristics, which limits its application. A possible solution could be an integration of a gas foil bearing with an electromagnetic actuator. This paper discusses the effect of electromagnetic actuators on the stability of a rotor supported on gas foil bearings. A coupled dynamic model combining the dynamics of gas foil bearing and electromagnetic actuator has been developed. The fluid film forces from the gas foil bearings and the electromagnetic forces from the electromagnetic actuators are integrated into the equations of motion of the rotor. The sub-synchronous vibration present in case of conventional gas foil bearings is reduced and the stability band of the rotor is increased due to the implementation of electromagnetic actuator.

中文翻译：

---

气箔轴承耦合电磁作动器支撑刚性转子稳定性分析

支撑在气箔轴承上的转子具有低阻尼特性，这限制了其应用。一种可能的解决方案是将气箔轴承与电磁致动器集成在一起。本文讨论了电磁致动器对支撑在气箔轴承上的转子稳定性的影响。已经开发了结合气箔轴承和电磁致动器动力学的耦合动力学模型。来自气箔轴承的液膜力和来自电磁致动器的电磁力被整合到转子的运动方程中。由于采用了电磁执行器，传统气箔轴承中存在的次同步振动减少了，转子的稳定带增加了。