Shock and Vibration / 2017 / Article / Tab 3

Research Article

Enhanced Bearing Fault Detection Using Step-Varying Vibrational Resonance Based on Duffing Oscillator Nonlinear System

Table 3

SNRs with various bearing fault types processed by different WSD methods.

Fault typesEnvelope
signal
SNR (dB)
MSTSR
output
SNR (dB)
WSSR
output
SNR (dB)
WSGSR
output
SNR (dB)
SVVR
output
SNR (dB)

Inner race−12.02−8.41−11.66−11.27−3.00
Outer race−19.81−9.23−12.91−11.23−4.27
Rolling element−26.01−12.80−13.42−12.70−0.41

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