Nonlinear and Non-Stationary Detection for Measured Dynamic Signal from Bridge Structure Based on Adaptive Decomposition and Multiscale Recurrence Analysis
| Autor: | Deshan Shan, Erhua Zhang, Qiao Li |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Computer science
01 natural sciences Signal lcsh:Technology Synchronization Hilbert–Huang transform 010305 fluids & plasmas lcsh:Chemistry bridges 0103 physical sciences General Materials Science 010306 general physics Instrumentation lcsh:QH301-705.5 ensemble empirical mode decomposition Fluid Flow and Transfer Processes Basis (linear algebra) Noise (signal processing) lcsh:T Process Chemistry and Technology multiscale recurrence analysis General Engineering White noise lcsh:QC1-999 Computer Science Applications complex signals Nonlinear system lcsh:Biology (General) lcsh:QD1-999 Recurrence quantification analysis lcsh:TA1-2040 lcsh:Engineering (General). Civil engineering (General) Algorithm lcsh:Physics |
| Zdroj: | Applied Sciences Volume 9 Issue 7 Applied Sciences, Vol 9, Iss 7, p 1302 (2019) |
| ISSN: | 2076-3417 |
| DOI: | 10.3390/app9071302 |
| Popis: | To test the nonlinearity and non-stationarity of measured dynamic signals from a bridge structure with high-level noise and dense modal characteristics, a method that combines the adaptive signal decomposition with the recurrence analysis is proposed to solve the difficulty of testing nonlinearity and non-stationarity of bridge structure signals. A novel white noise assistance and cluster analysis are introduced to the ensemble empirical mode decomposition to alleviate mode-mixing issues and generate single-mode intrinsic mode functions. Combining the hypothesis-testing scheme of nonstationary and nonlinear synchronization and surrogate techniques, a data-driven recurrence quantification analysis method is proposed and a novel recurrence quantification measure pairs are set up. To demonstrate the efficacy of the proposed methodology, complex signals, which are collected from a carefully instrumented model of a cable-stayed bridge, are utilized as the basis for comparing with traditional nonlinear and non-stationary test methods. Results show that the proposed multiscale recurrence method is feasible and effective for applications to a nonlinear and non-stationary test for real complex civil structures. |
| Databáze: | OpenAIRE |
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