Online Intelligent Identification of Modal Parameters for Large Cable-Stayed Bridges

Table 4

Comparison between EEMD results and real values (Hz).

Model order	True value [23]	March	July	October	December	Average	Tolerance	Percentage difference (%)
First	0.1856	0.1914	0.1791	0.1736	0.1815	0.1711	0.0063	3.37
Second	0.2191	0.2017	0.2164	0.2684	0.2711	0.2064	-0.0137	−6.25
Third	0.4531	0.4208	0.4311	0.4217	0.4319	0.3754	0.0369	8.15
Fourth	0.5746	0.5099	0.5054	0.5158	0.4904	0.5398	0.0624	10.85
Fifth	0.6928	0.7602	0.7370	0.7415	0.7064	0.7677	−0.0498	−7.18