Identification Uncertainties of Bending Modes of an Onshore Wind Turbine for Vibration-Based Monitoring

Table 2

Identification results of the natural frequencies of the four lowest bending mode pairs identified with BAYOMA and SSI-COV.

Mode pair	BAYOMA		SSI-COV
	FA (CoV)	SS (CoV)	FA	SS
1	0.30 Hz (9.36%)	0.297 Hz (0.27%)	0.308 Hz	0.298 Hz
2	1.431 Hz (0.34%)	1.418 Hz (0.22%)	1.442 Hz	1.393 Hz
3	3.187 Hz (0.83%)	3.027 Hz (0.2%)	3.225 Hz	3.053 Hz
4	3.55 Hz (0.34%)	3.796 Hz (0.26%)	3.568 Hz	3.813 Hz

The coefficient of variation (CoV) is listed in brackets in BAYOMA in addition to the identifications.