The Proceedings of the Dynamics & Design Conference
Online ISSN : 2424-2993
2006
Session ID : 624
Conference information
624 Acoustic Vibration Suppression via Active Noise Isolation using a Smart Structure
Masaki OTOMORIHiroshi OKUBOTakashi SHIMOMURAHiroshi TOKUTAKE
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CONFERENCE PROCEEDINGS FREE ACCESS

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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.
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© 2006 The Japan Society of Mechanical Engineers
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