Without damping controller

With damping controller

Wind Speed

Eigen value

Freq

Damping ratio ξ

Eigen value

Freq

Damping ratio ξ

7 m/s

−0.2038 ± j5.6072

−0.2744 ± j10.6985

0.8924

1.7027

0.0363

0.0250

−6.7045 ± j8.2796

−7.1012 ± j11.214

1.3177

1.7848

0.6293

0.3877

7.5 m/s

−0.1955 ± j5.4244

−0.2741 ± j11.6780

0.8633

1.8586

0.0360

0.0229

−6.7862 ± j8.3266

−7.2072 ± j11.081

1.3252

1.7636

0.6317

0.3303

8 m/s

−0.1878 ± j5.2587

−0.2080 ± j10.6595

0.8369

1.6965

0.0356

0.0191

−6.8607 ± j8.3661

−7.2969 ± j10.961

1.3315

1.7445

0.6341

0.4056

8.5 m/s

−0.1807 ± j5.1075

−0.2736 ± j10.6429

0.8128

1.6938

0.0353

0.0268

−6.9218 ± j8.3999

−7.3740 ± j10.852

1.3368

1.7272

0.6359

0.4355

9 m/s

−0.1741 ± j4.9688

−0.2734 ± j11.9278

0.7908

1.8983

0.0350

0.0224

−6.9747 ± j8.4291

−7.4410 ± j11.753

1.3415

1.8706

0.6375

0.3876