A Moving Window-Kernel Entropy Component Analysis (MW-KECA) approach was used to monitor the vibration data related to the units during the gearbox degradation process and diagnose gearbox faults in response to the frequent failures in gearboxes during the production process of wind power generation.This was done while considering the characteristics of industrial processes
such as multiple variables
high dimensionality
non-linearity
high data correlation
and slow deterioration of abnormal data.This method improves sample overfitting.Additionally
the Whale Optimization Algorithm (WOA) was introduced to address the issues of stochasticity and randomness in kernel parameter selection inherent in the algorithm.Simulation studies were conducted using gearbox datasets
and accurate identification and verification of different fault types were achieved in fault diagnosis on a rolling bearing test rig.Comparative analyses reveals that the adoption of MW-KECA combined with WOA results in more efficient and accurate fault time prediction
SCHÖLKOPF B, SMOLA A, MÜLLER K R. Nonlinear component analysis as a kernel eigenvalue problem[J]. Neural computation, 1998, 10(5): 1299-1319.
JIANG Q C, YAN X F, LV Z M, et al.Fault detection in nonlinear chemical processes based on kernel entropy component analysis and angular structure[J]. Korean journal of chemical engineering, 2013, 30(6): 1181-1186.