HIGHER ORDER SPECTRA AND ITS APPLICATION IN MACHINERY FAULT DIAGNOSIS  

高阶谱及其在机械故障诊断中的应用(英文)

作　　者：杨江天[1] 周立华[1] 陈家骥[1] 曾子平[1] 

机构地区：[1]天津大学机械工程学院

出　　处：《Transactions of Tianjin University》1999年第2期88-92,共5页天津大学学报（英文版）

摘　　要：The application of higher order spectra to machinery faults diagnosis is studied in this paper.A brief review of bispectra is presented,and more emphasis is placed on the ability of higher order spectra to extract diagnostic information from fault signals.Furthermore,by use of the algorithm of higher order spectra,two kinds of typical mechanical faults are analyzed.Results show that the high order spectra analysis is a more efficient method in machinery diagnosis compared with the FFT based spectral analysis.从机械故障诊断的角度,讨论了高阶谱分析方法提取故障信息的能力.利用高阶谱方法分析了两种典型的机械故障,结果显示,高阶谱分析比传统的信号处理方法(如基于FFT的频谱分析)能更有效提取故障征兆.

关 键 词：machinery fault diagnosis higher order spectra BISPECTRUM 112  dimension spectrum 

分 类 号：TP277[自动化与计算机技术—检测技术与自动化装置]