Active vibroacoustic control of plate structures with arbitrary boundary conditions

• Autorzy: Nowak Ł. , Zieliński T. G. , Meissner M.
• Języki publikacji: EN

Abstrakty

EN

The paper describes briefly some main aspects of the active feedback control system that has been developed and constructed for reduction of vibroacoustic emission of vibrating plate structures with arbitrary boundary conditions. Relations between the forms and frequency of the vibrations induced by an external harmonic excitation and the distribution of the generated acoustic pressure field are investigated using the developed numerical model based on indirect variational boundary element method. The aim of the control system is to minimize the sound pressure level in a given point of the ambient space. The system uses small, rectangle-shaped piezoelectric transducers as both sensors and actuators. The transducers are connected in a number of independent feedback loops, and the feedback gains are the control parameters which are optimized using the developed optimal control algorithm. The constructed active system has been tested for the stability and control performance during experimental research performed in an anechoic chamber. Results of experiments are presented in the paper, proving a high level of noise reduction and a good agreement with numerical predictions.

Słowa kluczowe

EN

vibroacoustics; active control; plate vibrations

PL

aktywne sterowanie; wibroakustyka

• Wydawca: Instytut Podstawowych Problemów Techniki PAN
• Czasopismo: IPPT Reports on Fundamental Technological Research
• Rocznik: 2013
• Tom: nr 4
• Strony: 5--9
• Opis fizyczny: Bibliogr. 15 poz., rys.

Twórcy

autor

Nowak Ł.

• Institute of Fundamental Technological Research Polish Academy of Sciences Pawińskiego 5B, 02-106 Warszawa, Poland

autor

Zieliński T. G.

• Institute of Fundamental Technological Research Polish Academy of Sciences Pawińskiego 5B, 02-106 Warszawa, Poland

autor

Meissner M.

• Institute of Fundamental Technological Research Polish Academy of Sciences Pawińskiego 5B, 02-106 Warszawa, Poland

Bibliografia

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