Comparison of Different Independent Component Analysis Algorithms for Output-Only Modal Analysis

Table 5

Error of natural frequencies identified by maximization negentropy with quasi-Newton method.

Modal order	Real natural frequency (Hz)	Frequency identified (Hz)	Percentage of relative error
1	22.89	24	0.485%
2	91.55	92	0.492%
3	205.99	206	0.005%
4	366.23	367	0.210%
6	824	825	0.121%
7	1121.6	1123	0.125%