Multiple-Fault Detection Methodology Based on Vibration and Current Analysis Applied to Bearings in Induction Motors and Gearboxes on the Kinematic Chain

Table 1

Computed frequencies of interest.

Rotational speed (rpm)	Frequencies of interest (Hz)
	293.4	88.02	176.04	17.50	35	21.99	4.89
889.28	266.79	533.58	53.06	106.12	67.88	14.82
2984.4	895.32	1790.65	178.09	356.18	227.83	49.74