基于EMD的齿轮箱齿轮故障诊断的研究

Research on Gear Fault Diagnosis Based on EMD

利用经验模态分解方法 (EMD)的自适应性,对齿轮箱齿轮故障信号进行分解,并对分解获得的本征模态函数(IMF)进行包络解调,提取出齿轮故障的特征频率。采用开发的模块,利用QPZZ故障试验台模拟齿轮点蚀、断齿故障,进行实例分析。分析结果表明,EMD方法可以有效应用于齿轮箱的故障诊断。

The self-adaptability of empirical mode decomposition （EMD） method was used to decompose the gearbox gear fauh signal and to envelope demodulate the intrinsic mode functions （IMF） to extract the characteristic frequency of the gear failure. The in- stance analyses on QPZZ fault test bench of simulating gear pitting and broken teeth fault show that the EMD method can be effectively used in gearbox fault diagnosis.