Output-Only Modal Analysis Based on Improved Empirical Mode Decomposition Method

Figure 13

The stabilization diagrams obtained from bandwidth restricted EMD based SSI-cov algorithm. (a) Mode 1:  Hz; (b) mode 2:  Hz; (c) mode 3:  Hz; (d) mode 5:  Hz. The stars denote the stable points with following stable criterion: , , and . The fourier spectrums are scaled to sever as comparison.

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