Fault diagnosis of rolling bearings using weighted horizontal visibility graph and graph Fourier transform

Graph Fourier transform (GFT) has been proven to be an effective tool for impulse component extraction of rolling bearings, but its performance is closely related to the structure of underlying graph. Compared with the weighted path graph, the weighted horizontal visibility graph (WHVG) can reflect the dynamics characteristics of vibration signals better. When the fault bearing vibration signal is transformed into the WHVG, GFT can cluster most...