Research Article
Research on Fault Feature Extraction Method Based on NOFRFs and Its Application in Rotor Faults
Table 5
The amount of change of RI, Ne, Fe1, Fe2, Fe3, and Fe4 under different rub-impact clearances (μm).
| | Indexes | 100 | 80 | 60 | 40 | 20 |
| | ΔRI | 0.2910 | 0.2132 | 0.0577 | 0.0566 | 0.0526 | | ΔNe | 0.0142 | 7.388 × 10−3 | 7.413 × 10−3 | 7.041 × 10−3 | 6.754 × 10−3 | | ΔFe1 | 2.771 × 10−3 | 1.700 × 10−3 | 1.810 × 10−3 | 1.807 × 10−3 | 1.803 × 10−3 | | ΔFe2 | 2.242 × 10−3 | 1.619 × 10−3 | 1.616 × 10−3 | 1.613 × 10−3 | 1.610 × 10−3 | | ΔFe3 | 3.949 × 10−4 | 8.183 × 10−5 | 8.164 × 10−5 | 8.150 × 10−5 | 8.135 × 10−5 | | ΔFe4 | 1.349 × 10−4 | 6.657 × 10−7 | 1.119 × 10−4 | 1.117 × 10−4 | 1.116 × 10−4 |
|
|
