“…16a-d and f. These results indicate that five frequency bands (4,800,3,200), (5,600, 1,600), (4,800, 1,067), (5,067,533) and (5,333,2,133) contain repetitive impulse features caused by bearing outer race fault. Because the frequency bands (5,600, 1,600), (4,800, 1,067) and (5,067, 533) have relatively narrow bandwidths, the SESs of their corresponding filtered signals exhibit better fault diagnosis effects.…”