Enhancement of efficiency of piezoelectric elements for bending vibration suppression of beams

提高压电元件抑制梁弯曲振动的效率

• 批准号: 21760169
• 负责人: YAMADA Keisuke
• 金额: $ 2.08万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21760169/
• 关键词: 振動制御; 圧電素子; スマート構造; 柔軟構造物; 受動制振; アクチュエータ; アナログ制御

A lot of vibration suppression methods using piezoelectric elements have been proposed thus far. Usually piezoelectric elements are bonded to beams or plates and coupled to electrical impedance. The performance of such methods is not so high and they are inferior to mechanical vibration suppression methods. In order to improve the efficiency of piezoelectric elements, a new attachment method based on mechanical impedance matching was proposed in this research. The impedance was matched by using spacers. More effective methods using extended spacers in longitudinal direction and negative stiffness were also proposed. The capacitance tunable circuit was also investigated.

迄今为止，已经提出了许多利用压电元件抑制振动的方法。通常，压电元件被连接到梁或板上，并与电阻抗耦合。这种方法的性能不高，不如机械抑制振动的方法。为了提高压电元件的工作效率，本文提出了一种基于机械阻抗匹配的新型压电元件连接方法。阻抗是用间隔片匹配的。此外，还提出了采用纵向扩展垫片和负刚度的更有效方法。并对电容可调电路进行了研究。

项目成果

圧電素子の電気機械結合係数を向上させる貼付手法

提高压电元件机电耦合系数的粘贴方法

• 发表时间: 2009
• 作者: 山田啓介;三浦裕介;松久寛;宇津野秀夫;澤田勝利;山口恵司
• 通讯作者: 山口恵司

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Optimum tuning of series and parallel LR circuits for passive vibration suppression using piezoelectric elements

• DOI: 10.1016/j.jsv.2010.06.021
• 发表时间: 2010-11
• 期刊: Journal of Sound and Vibration
• 影响因子: 4.7
• 作者: Keisuke Yamada;H. Matsuhisa;H. Utsuno;K. Sawada