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Composite Fault Diagnosis for Rotating Machinery of Large Units Based on Evidence Theory and Multi-Information Fusion

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Figure

Figure 1: Diagram of composite fault diagnosis for rotating machinery of a large unit based on evidence theory and multi-information fusion.
Figure 3: Large petrochemical unit simulation experiment system: (a) test bench physical map; (b) transmission sensor mounting position.
Figure 5: Vibration time-domain curves of the composite fault states: (a) gear teeth missing and bearing outer ring; (b) gear teeth missing and bearing inner ring wear; (c) gear teeth missing and bearing lack of ball bearings; (d) large and small gear teet
Table 3: Five dimensionless indexes of composite fault states.
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