Noise Reduction for Modal Parameter Identification of the Measured FRFs Using the Modal Peak-Based Hankel-SVD Method

Table 1

Modal parameters of the noised FRF signal.

Mode	Modal frequency (Hz) (original)	Modal frequency (Hz) (noised)	Frequency difference (Hz)	Damping factor (original)	Damping factor (noised)	Damping factor difference (%)
1	63.67794	72.34572	8.66778	0.000674	−0.00682	1111.957
2	399.3322	398.8602	0.472005	0.000295	0.000769	160.5308
3	428.0756	428.581	0.505418	0.000667	0.000515	22.80982
4	1119.442	1119.783	0.340427	0.000866	0.000991	14.50155
5	1334.573	1328.813	5.760097	0.000943	0.000941	0.250468
6	2195.12	2195.789	0.66933	0.001474	0.00135	8.443071
7	2381.407	2381.004	0.402907	0.001588	0.001627	2.482244