Abstract
This paper presents a new design method for active acoustic isolation and acoustic vibration suppression of a target structure. Two key ideas are used in the new design. The first one is to estimate transmitted sound pressures by using generated voltages of piezoelectric elements on a smart board. The second one is to use different weighting functions in frequency domain for each evaluating points considering the dynamic characteristics of the target structure. The control system for smart board is designed by using mixed H2/H∞ control. The result of numerical simulation shows that the present method is effective in reducing acoustic vibration of the target structure and the performance is superior to the ordinary method.
