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压电结构系统机电耦合的强化与多阶共振抑制

李琳 刘学

李琳, 刘学. 压电结构系统机电耦合的强化与多阶共振抑制[J]. 北京航空航天大学学报, 2014, 40(8): 1011-1016. doi: 10.13700/j.bh.1001-5965.2013.0502
引用本文: 李琳, 刘学. 压电结构系统机电耦合的强化与多阶共振抑制[J]. 北京航空航天大学学报, 2014, 40(8): 1011-1016. doi: 10.13700/j.bh.1001-5965.2013.0502
Li Lin, Liu Xue. Enhancement of electromechanical coupling for piezoelectric system and suppression of multimode vibration[J]. Journal of Beijing University of Aeronautics and Astronautics, 2014, 40(8): 1011-1016. doi: 10.13700/j.bh.1001-5965.2013.0502(in Chinese)
Citation: Li Lin, Liu Xue. Enhancement of electromechanical coupling for piezoelectric system and suppression of multimode vibration[J]. Journal of Beijing University of Aeronautics and Astronautics, 2014, 40(8): 1011-1016. doi: 10.13700/j.bh.1001-5965.2013.0502(in Chinese)

压电结构系统机电耦合的强化与多阶共振抑制

doi: 10.13700/j.bh.1001-5965.2013.0502
基金项目: 

国家自然科学基金重点资助项目(91016006)

详细信息
    作者简介:

    李琳(1956-),女,河北唐山人,教授,feililin@buaa.edu.cn.

  • 中图分类号: TB123;TH113

Enhancement of electromechanical coupling for piezoelectric system and suppression of multimode vibration

  • 摘要: 提高压电系统的机电耦合程度可以提高压电分支电路对于结构机械振动的抑制效果.提出了一种可同时提高压电系统多阶模态机电耦合程度、进而实现对系统多阶共振进行控制的方法.首先通过对压电悬臂梁模型的理论研究揭示了将压电片的电极离散、并以不同方式连接可以导致系统的机电耦合程度发生改变的现象.在此基础上导出可刻划此现象的模态机电耦合函数;提出通过对模态机电耦合函数的优化寻求压电片电极的最佳离散方式和最佳连接方式,以获得对应某一模态的最大机电耦合函数值.为了对多阶共振抑制,提出引入选通电路,通过对含有选通电路的模态机电耦合函数的参数优化实现同时提高压电系统多模态机电耦合程度、进而抑制多阶共振的方法.结合数值实例对此方法进行说明.

     

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出版历程
  • 收稿日期:  2013-08-28
  • 刊出日期:  2014-08-20

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