Adaptive algorithm for active control of high-amplitude acoustic field in resonator

Cˇervenka, M.; Bednarˇík, M.; Konícˇek, P.
June 2008
AIP Conference Proceedings;6/24/2008, Vol. 1022 Issue 1, p91
Conference Proceeding
This work is concerned with suppression of nonlinear effects in piston-driven acoustic resonators by means of two-frequency driving technique. An iterative adaptive algorithm is proposed to calculate parameters of the driving signal in order that amplitude of the second harmonics of the acoustic pressure is minimized. Functionality of the algorithm is verified firstly by means of numerical model and secondly, it is used in real computer-controlled experiment. The numerical and experimental results show that the proposed algorithm can be successfully used for generation of high-amplitude shock-free acoustic field in resonators.


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