Fault Characteristics Analysis for Rotor Systems with Misalignment Based on Wavelet Packet Decomposition and Frequency-band Energy Ratio Analysis
In this paper,combining with model experiment,fault characteristics of single-span and dual-disc rotor system with bearing misalignment are investigated by the combination of Wavelet Packet Decomposition (WDP)and frequen-cy-band energy ratio analysis method.Firstly,resampling is applied to ensure the accurate and efficient decomposition of 4 levels.Moreover,through a comparison with the time-domain waveforms and amplitude spectrums of decomposed sig-nals in different decomposing levels,the effects of different misalignments to system vibration are shown.And corres-ponding frequency-band energy ratio values can have an excellent corresponding relationship with the misalignment degree and actual speed which can be applied to fault feature extraction to implement effective diagnosis of misalignment fault.
ZHANG Shuai QU Yanhuai HAN Qingkai
School of Information and Electronic Engineering,Shandong Institute of Business and Technology,Yanta School of Mechanical Engineering and Automation,Northeastern University,Shenyang 110819,P.R.China
国际会议
The 30th Chinese Control Conference(第三十届中国控制会议)
烟台
英文
1-5
2011-07-01（万方平台首次上网日期，不代表论文的发表时间）