An Underdetermined Blind Source Separation Method with Application to Modal Identification

Table 1

Identified results of the structure in experiment 1.

	Modal	Reference [15]	SCA	Proposed method
Frequency (Hz)	1st	31.28	30.72	30.78
	2nd	216.5	215.6	215.6
	3rd	596.8	585.9	585.9
	4th	1115	1115.2	1115.3
Dam (%)	1st	2.661	2.733	2.863
	2nd	0.511	0.508	0.505
	3rd	0.601	0.606	0.585
	4th	0.242	0.234	0.234