Shock and Vibration

Shock and Vibration / 2009 / Article

Open Access

Volume 16 |Article ID 797125 |

Leopoldo P.R. de Oliveira, Paulo S. Varoto, Paul Sas, Wim Desmet, "A State-Space Modeling Approach for Active Structural Acoustic Control", Shock and Vibration, vol. 16, Article ID 797125, 15 pages, 2009.

A State-Space Modeling Approach for Active Structural Acoustic Control

Received27 Mar 2008
Revised23 Dec 2008


The demands for improvement in sound quality and reduction of noise generated by vehicles are constantly increasing, as well as the penalties for space and weight of the control solutions. A promising approach to cope with this challenge is the use of active structural-acoustic control. Usually, the low frequency noise is transmitted into the vehicle's cabin through structural paths, which raises the necessity of dealing with vibro-acoustic models. This kind of models should allow the inclusion of sensors and actuators models, if accurate performance indexes are to be accessed. The challenge thus resides in deriving reasonable sized models that integrate structural, acoustic, electrical components and the controller algorithm. The advantages of adequate active control simulation strategies relies on the cost and time reduction in the development phase. Therefore, the aim of this paper is to present a methodology for simulating vibro-acoustic systems including this coupled model in a closed loop control simulation framework that also takes into account the interaction between the system and the control sensors/actuators. It is shown that neglecting the sensor/actuator dynamics can lead to inaccurate performance predictions.

Copyright © 2009 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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