Research Article
Noise Source Identification Method for a Carpet Tufting Machine Based on CEEMDAN-AIC
Table 2
The signal characteristics of each frequency band.
| Frequency band (Hz) | Signal characteristics |
| 700–900 | Showing a certain periodicity | 250–350 | Showing a certain periodicity with the spindle rotation cycle | 150 or so | The signal did not change significantly over time, time-invariant stable signal | 0–60 | Showing a certain periodicity |
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