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Advances in Acoustics and Vibration
Table of Contents
Special Issues
Advances in Acoustics and Vibration
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2013
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Article
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Fig 3
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Research Article
Petroleum Pumps’ Current and Vibration Signatures Analysis Using Wavelet Coherence Technique
Figure 3
Frequency spectra of current and vibration signatures.
(a)
Healthy motor with symmetrical supply voltages (current)
(b)
Healthy motor with symmetrical supply voltages (vibration)
(c)
One-phase supply voltage with 20 volts drop (current)
(d)
One-phase supply voltage with 20 volts drop (vibration)