电磁力参数快速寻优的转子多频振动抑制研究

针对转子-轴承系统中的转子多频振动问题,以转子-轴承-电磁作动器系统为研究对象,建立装有电磁作动器的转子系统动力学模型,提出了一种基于电磁力参数快速寻优的转子系统多频振动主动抑制方法。采用变步长寻优策略,快速获取电磁作动器的电流最佳参数,通过向转子施加具有多个频率成分的旋转电磁力来抑制转子的多频振动。实验结果表明,快速寻优策略比整周寻优用时短,能够实现转子系统多个频率振动成分的主动抑制。

Multi-frequency Vibration Suppression in Rotor-Bearings System Based on Fast Optimizing Search Algorithm About the Electromagnetic Force Parameters

A multi-frequency periodic vibratio control approach is proposed for the rotor-bearings system based on the algorithm for the fast optimizing of electromagnetic parameters. First, a finite element model of the rotor-bearin-electromagnetic actuator system is established. Then, the control system optimizes the current value using varying step optimizing algorithm. It restrains vibration by applying multiple frequency-matched control force to the rotor. The experiments are carried out on the rotor-bearings test rig and the results indicate that the proposed control strategy reduces the time compared with that of the whole circle search algorithm. This paper offers another method for active suppression of multiple frequency vibration of a rotor system.