滚动轴承故障程度诊断方法研究

Research on Fault Severity Evaluation Method for Rolling Bearings

针对滚动轴承故障程度诊断,提出了基于有效值-转频比和连续小波能量熵的联合故障程度诊断方法。通过sigmoid函数将二者有机融合起来,构造出故障程度因子指标。研究结果表明,构造的故障程度因子在轴承正常状态下的值较小,并随着故障程度的加剧而不断增大。

Fault severity evaluation of rolling bearings is studied and a combined severity evaluation method is presented based on effective value - revolving frequency ratio and continuous wavelet transform （CWT） energy entropy. An indicator of fault severity is rendered, which is constituted by combining the former ones through sigmoid function. The result shows that the indicator of fault severity is low in normal condition and augments continuously as fault severity＇s increasing.