• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>3rd International Workshop on Structural Health Monitoring, Sep 12-14, 2001, Stanford University >Recent Advances in the Design of Enhanced Displacement Piezoelectric Actuators
【24h】

Recent Advances in the Design of Enhanced Displacement Piezoelectric Actuators

机译：增强位移压电执行器设计的最新进展

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Since their development during the 1940s, piezoelectric ceramics have been employed in a variety of devices - in hydrophones, loud speakers, ink jet printers and medical imaging equipment, to name a few. Recent demands for larger displacement piezoelectric actuators have called for devices that can amplify the displacement of the piezoceramic, since the strain of the piezoceramic itself is small. Existing designs designs can amplify the strain by an order of magnitude or more, but they employ piezoelectric elements having a regular shape, such as a plate or disk. Advances in ceramics processing techniques permit the manufacture of ceramic actuators possessing complex shapes and recent investigations have shown that through intelligent design, actuator performance can be increased by utilizing the anisotropy of the piezoceramic while considering the shape of the actuator itself. The present investigation further examines the spiral actuator, which has shown significant displacement amplification in previous studies. The purpose of the current work is to investigate methods of enhancing the displacement of the spiral actuator. Specifically, the concept of a bimorph bender actuator is coupled with the spiral geometry to determine if increased displacement amplification can be realized. With the aid of finite element analysis, parametric studies are conducted on bimorph spiral actuators to examine the influence of varying the thicknesses of its various constitutents, including the electrode, epoxy and piezoceramic layers. Results indicate that very large displacements are possible.
机译：自1940年代发展以来，压电陶瓷已用于多种设备-水听器，扬声器，喷墨打印机和医学成像设备等。由于压电陶瓷本身的应变很小，因此对大位移压电致动器的最新需求已经要求可以放大压电陶瓷位移的装置。现有的设计设计可以将应变放大一个数量级或更多，但是它们使用具有规则形状的压电元件，例如板或盘。陶瓷加工技术的进步允许制造具有复杂形状的陶瓷执行器，最近的研究表明，通过智能设计，可以在考虑执行器本身形状的同时，利用压电陶瓷的各向异性来提高执行器性能。本研究进一步检查了螺旋致动器，该螺旋致动器在先前的研究中显示出明显的位移放大。当前工作的目的是研究增加螺旋致动器位移的方法。具体而言，将双压电晶片弯曲机致动器的概念与螺旋几何形状耦合，以确定是否可以实现增加的位移放大。借助有限元分析，对双压电晶片螺旋执行器进行了参数研究，以检查改变其各种成分（包括电极，环氧树脂和压电陶瓷层）厚度的影响。结果表明非常大的位移是可能的。

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