Feedback controllers for broadband active noise reduction

Benoit Petitjean; Isabelle Legrain

doi:10.1117/12.184838

13 September 1994 Feedback controllers for broadband active noise reduction

Benoit Petitjean, Isabelle Legrain

Proceedings Volume 2361, Second European Conference on Smart Structures and Materials; (1994) https://doi.org/10.1117/12.184838
Event: Smart Structures and Materials: Second European Conference, 1994, Glasgow, United Kingdom

Abstract

The aim of the present paper is to demonstrate the efficiency of an LQG-based controller for the active control of the acoustic field radiated by a rectangular panel. This topic has been of interest for numerous researchers in the past 10 or 15 years, but very little attention has been paid to broadband disturbances occurring in a relatively high frequency range. These are unfortunately common features of noise perturbations in realistic structures such as airplanes or helicopters. The few articles that deal with this problem provide very scarce experimental results and are related to frequency bands where the structure dynamics is rather poor. From the outset, the problem at hand involves numerous difficulties, such as the modeling of the active structure itself and the possible large size of the controller. In the following, the experimental setup is described, then the controller design procedure is developed and finally some experimental results are shown that prove the efficiency of the method.

Citation Download Citation

Benoit Petitjean and Isabelle Legrain "Feedback controllers for broadband active noise reduction", Proc. SPIE 2361, Second European Conference on Smart Structures and Materials, (13 September 1994); https://doi.org/10.1117/12.184838

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