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

Table 2

Modal parameters of the noised and noise-reduced FRF signals.

Mode	Modal frequency (Hz) (original)	Modal frequency (Hz) (denoised)	Frequency difference (Hz)	Damping factor (original)	Damping factor (denoised)	Damping factor difference (%)
1	63.6779	63.61561	0.062331	0.000674	0.001091	61.78994
2	399.332	399.2953	0.036889	0.000295	0.000393	32.93652
3	428.076	428.108	0.032425	0.000667	0.000553	17.06583
4	1119.44	1119.429	0.013394	0.000866	0.000788	8.984838
5	1334.57	1334.775	0.202722	0.000943	0.000892	5.423373
6	2195.12	2195.505	0.385319	0.001474	0.001456	1.267132
7	2381.41	2380.844	0.562656	0.001588	0.001563	1.541009