Output-only modal analysis approach for time-unsynchronization signals in wireless sensor network

Jae-Hyung Park; Jeong-Tae Kim; Won-Bae Na; Jinho Woo

doi:10.1117/12.816264

8 April 2009 Output-only modal analysis approach for time-unsynchronization signals in wireless sensor network

Jae-Hyung Park, Jeong-Tae Kim, Won-Bae Na, Jinho Woo

Proceedings Volume 7295, Health Monitoring of Structural and Biological Systems 2009; 72952B (2009) https://doi.org/10.1117/12.816264
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2009, San Diego, California, United States

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.

Citation Download Citation

Jae-Hyung Park, Jeong-Tae Kim, Won-Bae Na, and 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); https://doi.org/10.1117/12.816264

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