Research Article
An Experiment Monitoring Signals of Coal Bed Simulation under Forced Vibration Conditions
Table 16
IMF component energy percentages of effective microseism signals by EEMD.
| IMF components | Working condition 43 (%) | Working condition 53 (%) | Working condition 63 (%) |
| IMF_h1 | 70.7 | 64.1 | 64.5 | IMF_h2 | 27.4 | 29.4 | 32.8 | IMF_h3 | 1.31 | 5.03 |
1.9 | IMF_h4 | 0.384 | 1.07 | 0.414 | IMF_h5 | 0.0921 | 0.207 | 0.157 | IMF_h6 | 0.0296 | 0.0651 | 0.0773 | IMF_h7 | 0.0149 | 0.0285 | 0.0465 | IMF_h8 | 0.00777 | 0.0172 | 0.027 | IMF_h9 | 0.00509 | 0.00983 | 0.0136 | IMF_h10 | 0.0021 | 0.00427 | 0.00626 | IMF_h11 | 0.00103 | 0.00192 | 0.00445 | IMF_h12 | 0.000539 | 0.000885 | 0.00212 | IMF_h13 | 0.000197 | 0.000562 | 0.000543 | IMF_h14 | 0.000227 | 0.000847 | 0.001 | IMF_h15 | | 0.000524 | 0.000759 | IMF_h16 | | | |
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