Structural vibration control for broadband noise attenuation in enclosures View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2005-07

AUTHORS

Kailash Krishnaswamy, Rajesh Rajamani, Jong Jin Woo, Young Man Cho

ABSTRACT

This paper develops and evaluates several strategies for structural vibration control with the objective of attenuating broadband noise inside a rectangular enclosure. The strategies evaluated include model-independent collocated control, model-based feedback control and a new “modal-estimate” feedback strategy. Collocated control requires no knowledge of model parameters and enjoys the advantage of robustness. However, effective broadband noise attenuation with colocated control requires a large number of sensor-actuator pairs. Model-based controllers, on the other hand, can be theoretically effective even with the use of a single actuator. However, they suffer from a lack of robustness and are unsuitable from a practical point of view for broadband structural vibration applications where the dynamic models are of large order and poorly known. A new control strategy is developed based on attenuating a few structural vibration modes that have the best coupling with the enclosure acoustics. Broadband attenuation of these important modes can be achieved using a single actuator, a limited number of accelerometers and limited knowledge of a few modal functions. Simulation results are presented to demonstrate the effectiveness of the developed strategy. More... »

PAGES

1414-1423

References to SciGraph publications

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/bf03023900

DOI

http://dx.doi.org/10.1007/bf03023900

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1001792239


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