首先分析了调幅信号Wigner-Ville分布的交叉项分布特征,提出了使用交叉项“虚互谱能量”诊断调幅型机械故障的新方法,并利用设计的带通核函数,提取了理论调幅信号的交叉项“虚互谱能量”,最后使用具有调幅故障的实际齿轮数据,验证了方法在实际应用中的有效性。
Based of Wigner - Ville cross-terms distribution properties of amplitude modulation signals, an approach of cross-terms false spectral energy to diagnose machinery faults was presented firstly, and then the transmission band core function was designed to extract the cross-terms false spectral energy of amplitude modulation signals. Finally, the real life gear data was provided in order to show the availability of the approach.