Research Article
Isomap-Based Three-Dimensional Operational Modal Analysis
Table 11
RDT and NExT results with a real modal damping ratio of 0.1.
| Real order | Identified order | Real modal ratio = 0.1 | PCA (MDS) | Isomap | LSMS | DMA | LSMS | DMA | RDT | NExT | RDT | NExT | RDT | NExT | RDT | NExT |
| 1 | 2 | 0.0532 | 0.0567 | 0.0587 | 0.0624 | 0.0510 | 0.0567 | 0.0605 | 0.0627 | 2 | 1 | 0.1155 | 0.1241 | 0.1045 | 0.1139 | 0.1136 | 0.1245 | 0.1074 | 0.1139 | 3 | 3 | 0.0668 | 0.0639 | 0.0650 | 0.0605 | 0.0682 | 0.0645 | 0.0653 | 0.0612 | 4 | 4 | 0.0716 | 0.0847 | 0.0869 | 0.0967 | 0.0770 | 0.0837 | 0.0956 | 0.0971 | 5 | 6 | 0.0742 | 0.0758 | 0.0748 | 0.0759 | — | — | — | — | 7 | 5 | 0.1079 | 0.1192 | 0.1308 | 0.1351 | 0.1369 | 0.1388 | 0.1473 | 0.1420 |
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