Planetary Gearbox Fault Diagnosis Using Envelope Manifold Demodulation

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static.hindawi.com/articles/sv/volume-2016/3952325/figures/3952325.fig.007a.svgz" name="3952325.fig.007a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>The envelope in time-domain</td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/sv/volume-2016/3952325/figures/3952325.fig.007b.svgz" name="3952325.fig.007b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>The envelope frequency spectrogram</td></tr></table>

<div>The Hilbert analysis result of contaminated signal with SNR = −8 dB.</div>

Shock and Vibration

fig7

Figure 7

Figure 7: Planetary Gearbox Fault Diagnosis Using Envelope Manifold Demodulation 