基础激励下磁悬浮转子系统动力学建模与分析

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Abstract Taking the maglev rotor with basic vibration of rotating equipment as the object, a dynamic model of maglev rotor considering the effects of basic excitation, gravity disturbance, additional inertia moment and imbalance is established. Through the equivalent stiffness damping model, the effects of basic excitation parameters and electronic control parameters on the system stability are analyzed, and the dynamic characteristics of maglev rotor trajectory and vibration amplitude under basic excitation are simulated. The research shows that the basic excitation not only introduces the external excitation, but also affects the support characteristics of the rotor system. The system stability shall mainly consider the instability caused by foundation excitation overload. The maglev rotor under basic excitation shows complex dynamic characteristics. The base rotation will make the coupling between rotor degrees of freedom, and the coupling between base translation and rotation. At the same time, the influence of base motion frequency and compound motion at specific frequency on rotor displacement needs to be considered.

Key words： Rotor dynamics Basic excitation Stability Vibration characteristics

Received: 29 July 2021 Published: 15 September 2022

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	Articles by authors
	SHEN Quan
	ZHOU Jin
	MA Yanchao
	XU Yuanping
	ZHANG Yue

Cite this article:

SHEN Quan,ZHOU Jin,MA Yanchao, et al. Dynamic modeling and analysis of maglev rotor system under base excitation[J]. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(17): 35-47.

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2022/V41/I17/35

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