8 April 2009 Output-only modal analysis approach for time-unsynchronization signals in wireless sensor network
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Abstract
In this study, an output-only modal analysis approach for wireless sensor nodes is proposed on the basis of assumption that a target structure is a linear system. In order to achieve the objective, the following approaches are implemented. Firstly, an output-only modal analysis method is selected for the wireless sensor networks. Secondly, the effect of time unsynchronization on the modal analysis method is mathematically derived. Thirdly, a new modal analysis approach using complex mode-shapes is proposed to extract modal parameters from unsynchronized signals. Finally, the proposed approach is evaluated by numerical tests and experimental tests.
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Jae-Hyung Park, Jeong-Tae Kim, Won-Bae Na, Jinho Woo, "Output-only modal analysis approach for time-unsynchronization signals in wireless sensor network", Proc. SPIE 7295, Health Monitoring of Structural and Biological Systems 2009, 72952B (8 April 2009); doi: 10.1117/12.816264; https://doi.org/10.1117/12.816264
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