圧電セラミックを部分接着した音片振動子の解析とメカニカルフィルタへの応用
スポンサーリンク
概要
- 論文の詳細を見る
This paper deals with an analysis of transducer-resonator which is suitable for piezoelectric mechanical filter for low frequencies. The transducer-resonator consists of two pieces of piezoelectric ceramic with a piece of base beam sandwiched between them, and the upper and lower electrodes are connected with each other electrically (Fig. 1(a)). Accordingly, the odd modes of the transverse vibration are excited, but the even modes are not. As the central point o o' in Fig. 1(a) is regarded as the "sliding end" of the mechanical beam, the analysis of the vibration of Fig. 1(a) can be accomplished as a vibration in the "free-sliding end beam" as shown in Fig. 1(b). The treatment of mechanical beam shown in Fig. 1(b) is based on the simple bending theory normally used for analysis of uniform flexure beam. First, the vibration modes of transducer-resonator are given and the results are compared with the vibration modes obtained by the mechanical network theory. As the impedance of piezoelectric ceramics partially bonded to drive the base beam cannot be neglected in general, as compared with the impedance of the base beam, the resonant frequency and the vibration mode of the transducer-resonator differ from those of the base beam only (Fig. 5, Fig. 6). Secondly, the force factor, equivalent constants and the method of suppression of higher harmonics of the transducer-resonator are shown. The third mode is eliminated in case of the length ratio l_I/l≒0. 65 for the thickness ratio t_p/t_r=1. 2, l_I/l≒0. 6 for t_p/t_r=0. 6, and l_I/l≒0. 58 for t_p/t_r=0. 3, respectively (Fig. 7, Fig. 8). Lastly, the equivalent circuit of mechanical filter taking due consideration of higher harmonics of transducer-resonator is described, and it is shown that the transducer-resonator of the higher harmonic suppression type is advantageous to simplify the equivalent circuit and decrease the spurious response in the filter characteristics (Fig. 13).
- 社団法人日本音響学会の論文
- 1973-01-01
著者
関連論文
- 数式解照合を柔軟に行うLISPによるCAIシステム
- パーツヒーダー用の変位拡大を目的とした段付片持ばり・圧電アクチュエータの振動解析
- 圧電振動子とオペアンプを組み合せた伝送特性(5) -パラレル構成による制動容量・消去の応用-
- 圧電振動子とオペアンプを組み合わせた伝送特性(4) -アクチュエータの周波数可変への応用-
- 圧電振動子とオペアンプを組み合わせた伝送特性(3) -パラレル構成の場合-
- 圧電振動子とオペアンプを組み合わせた伝送特性(2) -圧電振動子を2端子対素子として使用した場合-
- 圧電振動子とオペアンプを組み合わせた伝送特性(1) -圧電振動子を一端子対素子として使用した場合-
- 2-PI-2 パルス駆動による圧電アクチュエータの残留振動の防止(2-P.ポスターセッション(概要講演))
- A-10 圧電アクチュエータの高速動作用駆動電圧波形(圧電応用デバイス)
- P3-67 ジャイロモーメント・モータ : 2相駆動方式による構成の実験的検討(ポスター発表)
- テレビディスプレイの視覚教具としての利用について
- パーソナルコンピュータ用グラフィックスパッケージの再構築
- 分割電極屈曲圧電振動子のスプリアスレスポンスの抑圧
- たわみ振動バイモルフ圧電振動子のスプリアスレスポンスの抑圧
- 圧電セラミックを部分接着した音片振動子の解析とメカニカルフィルタへの応用