摘要
机械系统故障信号通常都是非平稳的,联合时频分布是对故障信号分析的重要且有力的工具,Wigner-Ville分布可从时域特征与频域特征的结合途径揭示非平稳信号的构成本质。文章简单介绍了Wigner-Ville分布的物理意义及其主要性质,并通过实验探讨了用Wigner-Ville分布处理诊断信号的优点。
Machine fault signals are often non-stationary signals.Joint time-frequency distribution is an important and powerful tool to analyze machine fault signals.Wigner-Ville distribution reveals the nature of the composition of non-stationary signals from the combined approach of the time domain characteristics and frequency domain characteristics.The physical meaning and its main character of the Wigner-Ville distribution are explained and advantages of using Wigner-Ville distribution to process fault signals are discussed.
出处
《仪表技术》
2011年第1期54-56,共3页
Instrumentation Technology
