年次大会
Online ISSN : 2424-2667
セッションID: J045073
会議情報
J045073 圧電吸音板のLR回路による周波数調整([J045-07]知的材料・構造システム(7))
大庭 崇史山田 啓介
著者情報
会議録・要旨集 認証あり

詳細
抄録

This paper proposes a frequency tuning method of the piezoelectric sound absorbing panel. The piezoelectric elements on the panel shunted with an inductance and a resistance work like a dynamic vibration absorber. The sound absorbing panel transforms sound energy into the vibration energy, and this vibration energy is dissipated through the resistance using electrical resonance. Because the piezoelectric sound absorbing panel has high sound absorption coefficient around its natural frequency, this method can be used for low-frequency noise reduction. However, the frequency at which the sound absorption coefficient becomes 1 was automatically determined in the method proposed in the previous research. Therefore, this paper proposes the frequency tuning method of the piezoelectric sound absorbing panel using the LR circuit. The governing equations were theoretically derived, and the optimum values of the LR circuit were formulated. Theoretical analysis was validated through simulations and experiments.

著者関連情報
© 2013 一般社団法人 日本機械学会
前の記事 次の記事
feedback
Top