Quantitative diagnosis of a spall-like fault of a rolling element bearing by empirical mode decomposition and the approximate entropy method
The EMD and ApEn were utilized in estimation of the size of spall-like fault in a bearing. The IMF-ApEn distribution of white noise signals was studied. The IMF-ApEn distribution template was developed to extract the EIMF components. Model of bearing signal in conditions with variable spall-like fault sizes.
quantitative diagnosis rolling element bearing empirical mode decomposition approximate entropy