Research Article
Instantaneous Modal Parameter Identification of Linear Time-Varying Systems Based on Chirplet Adaptive Decomposition
Table 4
Errors of identification results of the instantaneous damping ratio.
| | MAPE (%) | Mode | SNR (dB) |
| | Noise-free | 100 | 50 | 20 |
| | Time-domain algorithm | 1st | >50 | >80 | >80 | >100 | | 2nd | >50 | >80 | >80 | >100 | | 3rd | >50 | >80 | >80 | >100 |
| | Energy algorithm | 1st | 14.135 | 16.929 | 16.429 | 21.008 | | 2nd | 20.873 | 21.560 | 21.607 | 21.396 | | 3rd | 26.783 | 29.496 | 29.531 | 31.387 |
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