Research Article
A Fuzzy-Based Analytic Hierarchy Process for Mechanical Noise Source Identification of a Diesel Engine
Table 2
Decomposition results with different modal numbers.
| | Modal number K | Central frequencies (Hz) | | IMF1 | IMF2 | IMF3 | IMF4 | IMF5 | IMF6 | IMF7 |
| | 4 | 276 | 766 | 1442 | 2596 | — | — | — | | 5 | 274 | 762 | 1384 | 1780 | 2675 | — | — | | 6 | 251 | 577 | 823 | 1409 | 1924 | 2702 | — | | 7 | 240 | 561 | 810 | 1245 | 1392 | 1922 | 2707 |
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