Abstract
The present work focuses on a hybrid vibration control approach which is implemented and investigated through simulation and experimental trials. This approach is based on combining a passive control treatment, consisting of a constrained layer of viscoelastic material, with an active control arrangement composed of sensors, actuators, and an adaptive control unit that uses the FxNLMS algorithm. Such a hybrid control system is applied to a cantilever metallic beam subjected to a stochastic broadband excitation. A distinctive conclusion of this work is that the so-called feedback filter, which is part of the FxNLMS-based adaptive control unit, has shown to be detrimental to the control action in the case of the considered excitation.
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References
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Acknowledgements
M.R. Barghouthi and E.M.O Lopes acknowledge the financial support of CAPES (Brazil) and CNPq (Brazil), respectively.
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Barghouthi, M.R., Batista, E.L.O., Lopes, E.M.d.O. (2021). Numerical and Experimental Analysis of a Hybrid (Passive-Adaptive) Vibration Control System in a Cantilever Beam Under Broadband Excitation. In: Balthazar, J.M. (eds) Vibration Engineering and Technology of Machinery. Mechanisms and Machine Science, vol 95. Springer, Cham. https://doi.org/10.1007/978-3-030-60694-7_14
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DOI: https://doi.org/10.1007/978-3-030-60694-7_14
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