双时频特征分析与转子裂纹诊断

AFRICON 2009 Pub Date : 2009-11-03 DOI:10.1109/AFRCON.2009.5308079

A. Alugongo

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引用次数: 3

摘要

本文对带有开关裂纹的Jeffcott转子进行了瞬态振动仿真，并利用Wigner-Ville分布(WVD)和小波变换(WT)提取了转子的时频特征。研究了系统在刚度变化、偏心、偏心与裂纹张开方向夹角等不同情况下的动力学特性。探讨并报道了利用WVD和WT诊断转子裂纹的可能性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A dual time-frequency-feature investigation and diagnostics of a cracked de-laval rotor

In this paper, the transient vibration of a cracked Jeffcott rotor with a switching crack is simulated and time-frequency features extracted by Wigner-Ville Distribution (WVD) and Wavelet Transform (WT). The system dynamics in various scenarios including stiffness variation, eccentricity, and the angle between eccentricity and crack opening direction are investigated. A possibility to diagnose a cracked rotor by the WVD and WT is explored and reported.

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来源期刊

AFRICON 2009

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