基于小波变换的齿轮箱故障诊断

时域同步平均(Time Synchronous Averaging,TSA)信号只包含齿轮啮合频率信号和倍频信号,若齿轮出现故障,会使TSA信号得到某种程度的调制.文章将连续小波变换应用于齿轮箱振动采样的TSA信号,检测和分析齿轮箱的轮齿缺陷,设计并制作齿轮箱故障诊断试验台,通过齿轮全运行周期啮合试验,利用LABVIEW虚拟仪器采集系统采集振动信号,然后利用MATLAB编写相应的程序,绘制出所需信号的波形图,对所采集的数据文件进行信号分析处理,以达到齿轮箱故障诊断的目的,并验证了小波变换对齿轮故障诊断的有效性.

Fault Diagnosis for Gearbox Based on Wavelet Transform

The Time Synchronous Averaging(TSA) signal where the only constituent frequencies signal are the gear meshing frequency signal and harmonics signal.If the gear faulted,the TSA signal will have modulations.This paper applied continuous wavelet transform to the TSA signal of gearbox vibration,to test and analyse the teeth defect of gearbox.A gearbox fault diagnosis test-bed was made,and a data acquisition system was designed on the basis of LABVIEW to collect vibration signals during meshing experiment of the whole gear life cycle.Then drawing out the corresponding signal waveform by MATLAB program,and making signal analysis and processing,in order to achieve the gearbox fault diagnosis and verify the effectiveness of gear fault diagnosis.