Research Article
Multiple-Fault Detection Methodology Based on Vibration and Current Analysis Applied to Bearings in Induction Motors and Gearboxes on the Kinematic Chain
Figure 10
PSD spectrum from current signal when VFD is set to 50 Hz.
(a) For the healthy condition and all wear levels |
(b) For the healthy condition, bearing defect, 75% of uniform wear, and 75% of uniform wear + bearing defect |