Improved EEMD Denoising Method Based on Singular Value Decomposition for the Chaotic Signal

Table 3

Autocorrelation of vibration signals.

Time delay/s	The noisy signal	Wavelet weighted threshold method	Traditional EEMD	The proposed method
5	0.3865	0.9567	0.9573	0.9617
10	0.3561	0.9056	0.9045	0.9093
15	0.3216	0.8163	0.8155	0.8194
20	0.2746	0.6959	0.6948	0.6982
25	0.1986	0.5517	0.5499	0.5527