Research Article
Comparison of Different Independent Component Analysis Algorithms for Output-Only Modal Analysis
Table 11
Error of natural frequencies identified by Infomax with gradient descent method.
| Modal order | Real natural frequency (Hz) | Frequency identified (Hz) | Percentage of relative error |
| 1 | 22.89 | 23 | 0.481% | 2 | 91.55 | 92 | 0.492% | 3 | 205.99 | 206 | 0.005% | 4 | 366.23 | 367 | 0.210% | 6 | 824 | 825 | 0.121% | 7 | 1121.6 | 1122 | 0.036% |
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