A Diagnosis Method for Rotation Machinery Faults Based on Dimensionless Indexes Combined with -Nearest Neighbor Algorithm

Figure 2

Rotating machinery fault diagnosis real experiment condition. (a) The developed real test bed. (b) Fault diagnosis rotating machinery test bed. (c) Normal bearing. (d) Wearing ball bearing. (e) Outer ring crack bearing. (f) Inner ring crack bearing. (g) Bend shaft. (h) Lacking ball bearing.

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