Research Article

Research on Fault Feature Extraction Method Based on NOFRFs and Its Application in Rotor Faults

Table 4

Comparison of Clenshaw–Curtis integral and int integral function results.

Clearance (μm)Clenshaw–Curtis integralInt infinite integral

Normal0.06701453650.06701455782.1289 × 10−8
1000.35802655280.35802662867.5884 × 10−8
800.57127225860.57127234418.5445 × 10−8
600.62894525270.62894525347.0059 × 10−8
400.68555160200.68555158581.6181 × 10−8
200.73818751320.73818756244.9269 × 10−8