TITLE:
The Application of Three Order Cumulants Coupling Features in Fault Diagnosis
AUTHORS:
Wenbing Wu, Rihua Liu
KEYWORDS:
Three Order Cumulant, 1 (1/2) Dimension Spectrum, Coupling, Fault Diagnosis
JOURNAL NAME:
International Journal of Modern Nonlinear Theory and Application,
Vol.9 No.4,
November
13,
2020
ABSTRACT: Although mechanical vibration is extremely complicated, each fault signal produced by it has its own inherent features, The distinction may be most prominent between the certain components hidden in those features and the same components of normal signals. Three-order cumulant can reduce the Gaussian background noise automatically and its complex formal includes different coupling information of its signal. In the experiment, through these different coupling modes, the same coupling components are fetched from specific fault signal and normal signal, then these components are used to diagnose that certain fault. The results show that the method can fetch the most prominent distinction between normal signal and the specific fault signal, so the specific fault diagnosis by this method is satisfactory.