摘要
简述了短时傅氏分析、Wigner分布及小波分析等时频分析方法和特点;对间隙非线性机械系统振动信号进行了小波分析,发现了间隙非线性机械系统振动信号在小波分解中的状态特征;应用时频分析方法对MCNC82数控磨床进行了故障诊断。
The time frequency analysis methods, such as STFT, Wigner distribution and wavelet transform are studied. The state characteristics of non linear mechanical system in wavelet transform are found. The fault of MCNC82 numerically controlled machine tool are diagnosed by time frequency analysis methods. It has been proved that the time frequency analysis methods are effective for the mechanical fault diagnosis.
出处
《大连理工大学学报》
CAS
CSCD
北大核心
1996年第3期301-305,共5页
Journal of Dalian University of Technology
基金
国家教委博士点基金资助项目
关键词
故障诊断
时频分析
机械设备
nonlinear structural analysis
fault diagnosis/time frequency distribution
wavelet transform