Articles | Volume 13, issue 1
https://doi.org/10.5194/ms-13-331-2022
https://doi.org/10.5194/ms-13-331-2022
Research article
 | 
06 Apr 2022
Research article |  | 06 Apr 2022

Optimal sensor placement and model updating applied to the operational modal analysis of a nonuniform wind turbine tower

Mohammad Tamizifar, Masoud Mosayebi, and Saeid Ziaei-Rad

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Subject: Dynamics and Control | Techniques and Approaches: Experiment and Best Practice
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Cited articles

Allen, M. S., Sracic, M. W., Chauhan, S., and Hansen, M. H.: Output-Only Modal Analysis of Linear Time Periodic Systems with Application to Wind Turbine Simulation Data, Structural Dynamics and Renewable Energy, Conference Proceedings of the Society for Experimental Mechanics Series, Springer, New York, NY, 1, 1–4 February 2010, 361–374, https://doi.org/10.1007/978-1-4419-9716-6_33, 2011. 
Allemang, R. J.: The Modal Assurance Criterion – Twenty Years of Use and Abuse, J. Sound. Vib., 37, 14–23, 2003. 
Bakhary, N., Tong, K. H., Kueh, A. B. H., and Yassin, A. Y.: Optimal sensor placement for mode shapes using improved simulated annealing, Smart Struct. Syst., 13, 389–406, https://doi.org/10.12989/sss.2014.13.3.389, 2014. 
Boonyapinyo, V. and Janesupasaeree, T.: Data-driven stochastic subspace identification of flutter derivatives of bridge decks, Wind Eng. Ind. Aerodyn., 98, 784–799, 2010. 
Brincker, R. and Ventura, C. E.: Introduction to Operational Modal Analysis, Wiley, 372 pp., ISBN 978-1-119-96315-8, 2015. 
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Short summary
We show how the operational modal analysis of a nonuniform wind turbine tower can be performed and used to acquire effective and reliable test results and dynamic behavior. Results show that a tailor-made genetic algorithm (using auto-MAC as the fitness function) is a practical approach to finding the optimal position of the sensors to obtain the best results for objective modes. We also accessed the updated finite element model with less than 1 % error compared to the frequencies from the test.