Complete Inverse Method Using Ant Colony Optimization Algorithm for Structural Parameters and Excitation Identification from Output Only Measurements

Table 6

Identified results for continuous hammer hits on the top floor.

Computation response segments	Identification results (×10^5) and identification errors
	𝑘1	Error	𝑘2	Error	𝑘3	Error
12.0~12.33 s	5.5252	−1.97	5.5454	−1.62	5.6421	0.10
13.0~13.33 s	5.5462	−1.60	5.6372	0.01	5.6888	0.93
27.0~27.33 s	5.5804	−1.00	5.6745	0.67	5.6446	0.14
28.0~28.33 s	5.5929	−0.77	5.4982	−2.45	5.7204	1.49
39.4~39.73 s	5.5038	−2.35	5.4916	−2.57	5.5697	−1.19
40.4~40.73 s	5.4955	−2.50	5.5077	−2.29	5.6238	−0.23
43.4~43.73 s	5.4719	−2.92	5.6114	−0.45	5.5332	−1.83
Average value	5.5308	−1.87	5.5666	−1.24	5.6318	−0.08