Shock and Vibration

Research Article

A Novel Detrended Fluctuation Analysis Method for Gear Fault Diagnosis Based on Variational Mode Decomposition

Table 2

Classification results based on VMD-DFA and STS-DFA method in independent dataset.
MethodNormalScratchedToothlessCPETRR
VMD-DFA(20/20)(20/20)(18/20)(20/20)(78/80)
(Inde)100%100%90%100%97.5%
STS-DFA(19/20)(14/20)(15/20)(20/20)(68/80)
(Inde)95%70%75%100%85%
CPE: circular pitch error; TRR: total recognition rate; VMD: variational mode decomposition; DFA: detrended fluctuation analysis; STS: small time scale; Inde: independent dataset.