Seminar za primenjenu matematiku, 22. decembar 2009.

Dr. Ing. Tamara Nestorović, Mechanik adaptiver Systeme, Ruhr-Universitat Bochum, Germany:

MODEL DEVELOPMENT OF A SMART ACOUSTIC STRUCTURE AND ITS IMPLEMENTATION FOR THE MODEL-BASED ACTIVE STRUCTURAL ACOUSTIC CONTROL

Abstract: Two approaches for model development of a smart acoustic box are presented: the finite element (FE) approach and the subspace identification. Both approaches result in a state-spacemodel, which can be used for obtaining the frequency responses and for the controller design. In order to validate the developed FE model and to perform the subspace identification, an experimentalHardware-in-the-Loop set-up with the acoustic box and dSPACE system is used. Based on the developed models the control methods are suggested and implemented for the noise reduction within the acoustic structure. As the noise measure, the pressure of the acoustic fluid at a prescribed point within the acoustic box is defined. Investigations through numerical simulations and experimental studies have shown a good agreement between the FE-based and identified models as well as a considerable reduction of the noise level using the suggested control methods (optimal and adaptive control).

Predavanje će se održati u utorak, 22.12.2009. u 14:15, sala 301f MI SANU.



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