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

Figure 4

Histograms with normal distribution fits and the standard deviation of the MAC, , S2MAC, , and the directional angle of (top line) and (bottom line) identified mode shapes using SSI-COV and BAYOMA compared with the mode shapes of the DeSiO model, normalised according to the probability density functions (pdf). The determination of the uncertainty quantification of BAYOMA is performed using the covariance matrix of the mode shape and the Monte Carlo method with 3000 samples.