Research Article

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

Table 3

Identified results with noise-free measurements.

Parameters and its real valuesCase 1Case 2Case 3

271390[1, ]271390.00 [1, ]271390.00 [1, ]271389.99
290360[1, ]290360.00 [1, ]290360.00 [1, ]290360.00
282690[1, ]282690.00 [1, ]282690.00 [1, ]282689.99
252480[1, ]252490.00 [1, ]252479.99 [1, ]252479.99
233540[1, ]233540.00 [1, ]233540.00 [1, ]233540.00
229940[1, ]229939.99 [1, ]229940.00 [1, ]229940.00
2469.65[1, ]2469.6499 [1, ]2469.6499 [1, ]2469.6500
2874.56[1, ]2874.5600 [1, ]2874.5600 [1, ]2874.5599
2572.48[1, ]2572.4800 [1, ]2572.4799 [1, ]2572.4799
2297.57[1, ]2297.5699 [1, ]2297.5700 [1, ]2297.5700
2265.33[1, ]2265.3300 [1, ]2265.3300 [1, ]2265.3299
2092.45[1, ]2092.4499 [1, ]2092.4499 [1, ]2092.4500
10020100
Iteration number410417968

: initial values range of the parameter vector, generate solutions by uniform random sampling for archive ; : identified parameter vector, : number of sampling points used.