Moving Window Differential Evolution Independent Component Analysis-Based Operational Modal Analysis for Slow Linear Time-Varying Structures

Figure 6

Comparison of the modal shape identified by MWICA and MWDEICA to the real modal shape at two moments. (a) When t = 50.25 s, the 1^st modal shape, (b) when t = 50.25 s, the 2^nd modal shape, (c) when t = 50.25 s, the 3^rd modal shape, (d) when t = 1350 s the 1^st modal shape, (e) when t = 1350 s the 2^nd modal shape, and (f) when t = 1350 s the 3^rd modal shape.

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(b)

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