Research Article
Machine Fault Detection Based on Filter Bank Similarity Features Using Acoustic and Vibration Analysis
Figure 10
Obtained classification error by the pair of filter bank methods and similarity measures with respect to different SNR levels of raw vibration (left), acoustic (middle), and combined vibroacoustic (right) signals from bearing fault test rig experiment.
(a) EMD |
(b) WPT |
(c) FFB |