HHT Based Analysis on Experiments of Rotor System with Rub-Impact

Abstract:

Based on the demand of engineering, the motion characteristics and time-frequency properties of rotor system with rub-impact at fixed limiter are studied by experiment. Three typical cases at different rotating speeds are chosen from the experiment. On the basis of traditional amplitude spectrum and shaft center orbit methods, Hilbert-Huang transformation is applied to the fault signals analysis. Fault features are characterized completely and accurately by Hilbert spectrum. It is show that the vibration of the system is with typical characteristic of periodic motions and corresponding time-frequency (instantaneous frequency) -amplitude /energy representations in the rotor system with rub-impact at fixed limiter.

• Periodical: Advanced Engineering Forum (Volumes 2-3)
• Pages: 111-116
• DOI: https://doi.org/10.4028/www.scientific.net/AEF.2-3.111
• Online since: December 2011
• Authors: Yang Yong, Shuai Zhang, Yan Huai Qu
• Keywords: Hilbert-Huang Transform (HHT), Rotor System, Rub-Impact at Fixed Limiter

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