• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Conference on damping and isolation >Broadband piezoelectric shunts for passive structural vibration control
【24h】

Broadband piezoelectric shunts for passive structural vibration control

机译：被动结构振动控制的宽带压电分流器

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This paper reports an advanced passive piezoelectric shunt damping technique called broadband piezoelectric shunting. The shunt circuit for the broadband shunting is built with a reactance neutralizing circuit, which is designed with operational amplifier circuits to maximize the parallel reactance of the shunt circuit over a wide frequency band. It is different from the earlier shunt circuits, either used for the single- or multiple-mode shunting, which were built with inductors or simulated inductor circuits. In these earlier shunt circuits the anti-resonant frequency of the shunt circuit, with the inclusion of the piezoelectric transducer, was tuned with the inductor to a specific frequency to match with the natural frequency of the mode to be controlled. We first describe how the concept of the broadband shunt circuit was conceived and developed. We next report the shunt damping experiments performed on three different structures: a thin aluminum cantilever beam, a two-wing aluminum cantilever beam, and a small-scale thermoplastic composite fairing. We have successfully demonstrated broadband amplitude reduction of structural vibration modes over a wide frequency band using the broadband shunt-damping technique. More detailed experimental results will be presented.
机译：本文报道称为宽带压电分流一种先进的压电无源分流阻尼技术。为宽带分流分流电路是建立与一个电抗电路中和，其目的是与运算放大电路以最大化分流电路的并联电抗在很宽的频带。它是从早期的分路电路，无论是用于单次或多次模式分流，将其内置有电感器或模拟电感器电路不同。在这些早期的分路电路的分流电路的反谐振频率，与列入压电换能器的，与所述电感器到特定的频率调谐，以匹配与该模式的固有频率被控制。我们首先描述了宽带分流电路的概念是如何设计和开发。我们接下来报告分流阻尼在三个不同的结构进行的实验：一薄的铝悬臂梁，一个两翼铝悬臂梁，和一个小规模的热塑性复合材料的整流罩。我们已经成功地证明使用宽带分路阻尼技术在很宽的频带的结构的振动模式的宽带振幅降低。更详细的实验结果将提交。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号