• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Advanced Functional Materials >Measured Output Voltages of Piezoelectric Devices Depend on the Resistance of Voltmeter
【24h】

Measured Output Voltages of Piezoelectric Devices Depend on the Resistance of Voltmeter

机译：压电设备的测量输出电压取决于电压表的电阻

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

Piezoelectric mechanical energy harvester (MEH) has been developed as an important emerging variant of piezoelectric devices. Experiments in the literature show that the voltage-time curves of piezoelectric devices encompass both positive and negative characteristics even though the strain in the piezoelectric material is always positive during the applied cycling load. This does not agree with the results predicted by the piezoelectric theory of open circuit. Here, both the experiments and theory are performed to understand this important problem. A zirconate titanate (PZT) MEH is fabricated and the output voltages are recorded with three voltmeters. It is found that the measured voltages depend on the resistance of voltmeter. The peak value of voltage increases with the increase of the resistance of voltmeter, which is contrary to the established knowledge that the measurement results are independent of the instruments used. A theoretical model considering the voltmeter with finite resistance is established. The charge is allowed to go through the voltmeter and switch the directions during increasing and releasing of strain. The results by this model agree well with those from the experiments. The findings suggest that the resistance of voltmeter should be reported for voltage measurement of the piezoelectric devices.
机译：压电机械式能量收集器（MEH）已被开发为压电设备的重要新兴形式。文献中的实验表明，即使在施加的循环负载期间压电材料中的应变始终为正，压电器件的电压-时间曲线也包含正特性和负特性。这与开路的压电理论所预测的结果不一致。在这里，进行实验和理论都是为了理解这个重要问题。制作了钛酸锆（PZT）MEH，并用三个电压表记录了输出电压。发现测得的电压取决于电压表的电阻。电压的峰值随电压表电阻的增加而增加，这与已确定的测量结果独立于所用仪器的认识相反。建立了考虑电阻有限的电压表的理论模型。在应变增加和释放期间，允许电荷通过电压表并切换方向。该模型的结果与实验结果吻合良好。这些发现表明，应报告电压表的电阻，以测量压电器件的电压。

著录项

  • 来源
    《Advanced Functional Materials》 |2015年第33期|5320-5325|共6页
  • 作者

    Su Yewang; Dagdeviren Canan; Li Rui;

  • 作者单位

    Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China|Northwestern Univ, Dept Civil & Environm Engn, Evanston, IL 60208 USA;

    MIT, David H Koch Inst Integrat Canc Res, Cambridge, MA 02138 USA|Univ Illinois, Frederick Seitz Mat Res Lab, Beckman Inst Adv Sci & Technol, Dept Mat Sci & Engn, Urbana, IL 61801 USA;

    Dalian Univ Technol, Dept Engn Mech, State Key Lab Struct Anal Ind Equipment, Dalian 116024, Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    energy harvesters; piezoelectric devices; zirconate titanate; stretchable electronics; voltage output;

    机译：能量收集器;压电装置;钛酸锆;可拉伸电子器件;电压输出;

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