(a)
(b)
(c)
(d)
(e)
(f)
Figure 9: Analysis results for the bearing signal with a defective inner race: (a) original signal; (b) envelope signal with a filtering band at 2500–3000 Hz; (c) optimal MSTSR output signal (optimal parameters: , , , and ); (d) optimal WSSR output signal (optimal parameters: , , , and ); (e) optimal WSGSR output signal (optimal parameters: , , , V1 = 0.8, , and ); and (f) optimal SVVR output signal (optimal parameters: , , , , , and  rad/s).