Research Article
Comparison of Support Vector Machine-Based Techniques for Detection of Bearing Faults
Table 1
Calculation formulas of eigenvalue indicators.
| Basic eigenvalue indicators | Calculation formulas | Eight eigenvalue indicators | Calculation formulas |
| Mean | | Waveform indicator | | Root-mean-square value | | Peak indicator | | Square root amplitude | | Pulse indicator | | Absolute average | | Margin indicator | | Skew value | | Skewness indicator | | Kurtosis value | | Kurtosis indicator | | Variance | | Square root amplitude | | Maximum | | Variance indicator | |
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is the collected signal points, . |