Abstract
This paper describes the evaluation of a time domain algebraic modal parameters identification methodology. This methodology is applied on a wind turbine blade. The natural frequencies and modal damping factors associated to the blade are estimated from measurements of velocities. A comparison with usual modal identification techniques is performed in order to evaluate and establish the main contributions of the proposed approach. The modal parameter identification algorithms are implemented to run (but not limited to) on a Matlab platform running in a PC using measurements obtained from a laser vibrometer and the corresponding data acquisition system. The results show the performance and parametric estimation of the proposed algebraic identification approach.
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Acknowledgements
We appreciate the support of the wind tunnel facility’s technical staff of Instituto de Ingeniería of Universidad Nacional Autónoma de México. We express our gratitude to R. Sanchez, I.M. Arenas, O. Rosales and M.A. Mendoza for their special attention and disposition to collaborate in this project.
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Trujillo-Franco, L.G., Abundis-Fong, H.F., Campos-Amezcua, R., Gomez-Martinez, R. (2021). Modal Analysis on a Wind Turbine Blade Based on Wind Tunnel Experiments. In: Dilworth, B., Mains, M. (eds) Topics in Modal Analysis & Testing, Volume 8. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-030-47717-2_1
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DOI: https://doi.org/10.1007/978-3-030-47717-2_1
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