摘要
为了对基于柔性压电材料的流致振动俘能装置的设计优化提供技术支持,对一种压电纤维复合材料(MFC)的压电纤维片在弯曲摆动作用下的压电特性展开研究。首先理论分析了MFC压电纤维片的压电输出机理,并建立了压电模型,得出影响MFC压电纤维片输出开路电压幅值大小的各种因素;然后设计搭建了一种基于步进电机的MFC压电纤维片往复弯曲摆动试验台,利用该试验台研究了MFC压电纤维片在不同弯曲角度、弯曲摆动速度、基板、表面积等因素下的压电特性。研究结果表明,MFC压电纤维片的输出开路电压幅值随纤维片弯曲角度的增加而增大,当输出电压幅值达到最大值,继续增加弯曲角度,输出开路电压幅值不会产生明显变化;其输出开路电压幅值随压电片表面积的增加而变大;弯曲摆动速度及基板对输出开路电压幅值影响较小。
In order to provide technical support for the design and optimization of the fluid-induced vibration energy harvesting device based on the flexible piezoelectric materials,the piezoelectric properties of the MFC(Macro-Fiber Composite)under the action of bending and swinging was studied.Firstly,the piezoelectric output mechanism of MFC piezoelectric fiber sheet was analyzed theoretically,the piezoelectric model of MFC piezoelectric fiber sheet was established,and various factors affecting the magnitude of the open circuit voltage output of the MFC piezoelectric fiber sheet are obtained.Then a MFC piezoelectric fiber sheet reciprocating bending and swinging test bench based on stepper motor is designed and built,the piezoelectric properties of MFC piezoelectric fiber under different bending angles,bending and swinging speeds,substrates,surface areas and other factors were studied by using the test bench.The results show that the output open-circuit voltage amplitude of MFC piezoelectric fiber increases with the increase of bending angle.When the output voltage amplitude reaches the maximum and the bending angle continues to increase,the output open-circuit voltage amplitude will not change significantly.The output open-circuit voltage amplitude will increase as the surface area of the piezoelectric sheet increase,and the bending swing speed and substrate have no obvious influence on the output open-circuit voltage amplitude.
作者
陈鹏瑜
常宗旭
袁祥
高飞
廉自生
CHEN Pengyu;CHANG Zongxu;YUAN Xiang;GAO Fei;LIAN Zisheng(College of Mechanical Engineering, Taiyuan University of Technology, Taiyuan 030024, China;Shanxi Key Laboratory of Fully Mechanized Coal Mining Equipment, Taiyuan 030024, China)
出处
《压电与声光》
CAS
北大核心
2020年第3期365-368,共4页
Piezoelectrics & Acoustooptics
基金
国家自然科学基金联合资助项目(U1610251)
山西省自然科学基金资助项目(201601D011057)。
关键词
压电纤维复合材料
压电模型
试验台
压电特性
试验研究
piezoelectric fiber composites
piezoelectric model
test bench
piezoelectric property
experimental
作者简介
陈鹏瑜(1992-),男,山西长治人,硕士生,主要从事微能量收集及压电俘能的研究,E-mail:cpyxingfu@163.com;通讯作者:常宗旭,男,教授,硕士生导师,E-mail:changzongxu@163.com。
