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

700–900Showing a certain periodicity
250–350Showing a certain periodicity with the spindle rotation cycle
150 or soThe signal did not change significantly over time, time-invariant stable signal
0–60Showing a certain periodicity