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Shock and Vibration
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2021
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Article
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Fig 10
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Research Article
A Novel MPE-LPP-ELM Recognition Method for the Fault Diagnosis of Spiral Bevel Gears
Figure 10
The 3D map at speed of 1,200 r/min. (a) The 3D map of MPE-LPP. (b) The 3D map of MPE-PCA. (c) The 3D map of MPE.
(a)
(b)
(c)