第30卷第6期 2017年6月
传感技术学报
CHINESE JOURNAL OF SENSORS AND ACTUATORS
Vol. 30No. 6 June2017
VibrationSensingPropertiesofaMetalCorePiezoelectric
FiberwithFourElectrodesontheSurface
SUNKaixuan,ZHANGYi,BIANYixiang,XIAXianlong,WUZhixue
( College of Mechanical Enginering, YangZhou U/nitersity, Yangzhou Jiangsu 225127, China)
Abstract : The four electrode metal core piezoelectric fibers( FMPF) impact vibration sensor that can perceive a vi-bration perception of the external surface is made through imitating the structure and function of insect's hair sensil-la. Piezoelectric ceramic fiber embryo containing platinum core was prepared by using dry pressing method and was treated by high temperature sintering, coating the surface of electrode polarization, high temperature polarization, then FMPF impact vibration sensor is made.The theoretical model of the FMPF impact vibration sensor of the canti-lever beam is established and the relationship between the sensing signal and the angle and amplitude of the shock vibration is analyzed based on the piezoelectric equations and vibration theory. The FMPF is fixed on the substrate, and the experimental system is built, and the response of FMPF to the impact vibration is tested, and the theoretical model is verified. The results show that the amplitude of the sensing signal and the shock vibration of FMPF is line ar, and the direction of the"8"-shaped relationship. The conclusion is drawn that the FMPF sensor can measure the magnitude and direction of the shock vibration.
Key words : piezoelectric fiber ;impact vibration ; sensor; dry pressing method ; surface electrode
EEACC:7230
doi :10.3969/j.issn.10041699.2017.06.007
表面四电极含金属芯压电纤维的
冲击振动传感特性研究* 孙凯旋，张代边义祥·，夏咸龙，昊志学
（扬州大学机械工程学院，江苏扬州225127）
摘要：模仿昆虫毛发感受器的结构和功能，设计制备了一种能测量外部振动的表面四电极含金属芯压电纤维（FMPF）冲击振动传感器。采用干压成型法制备了含铂金芯的压电陶瓷纤维胚体，经过高温烧结、涂镀表面电极、高温极化后，制成FMPF 传感器。基于压电方程和振动理论，建立了悬臂架结构的FMPF冲击振动传感器的理论模型，分析了传感信号与冲击振动角度和幅值的关系。把FMPF固定在基体上，搭建了实验系统，测试了FMPF对冲击振动的响应，验证了理论模型。结果表明，
向的结论。
关键词：压电纤维；冲击振动：传感器；干压成型法；表面电极
中图分类号：TM282A
文献标识码：A
自然界中，动物拥有感知周围环境，并做出相应反应的能力，这对动物的生存起到至关重要的作用。正是因为如此，很多昆虫才能够通过周围气流的变化感知天敌的位置和来犯方向，并能逃之天天(1)。它们感知系统的基本原理是相同的，其中蟋蜂是通
文章编号：1004-1699(2017)06-084106
过尾纤系统来感知周围气流变化的。蟋蜂的2根尾纤是从其腹部伸出，呈现悬臂梁结构，其夹角为60° 左右。蟋蜂的尾纤上分布有许多长短不一的感觉毛。这种感觉毛的结构为1根光滑的直杆一端垂直立于尾纤表皮毛窝中，另一端自由，呈现悬臂梁结
项目来源：国家自然科学基金项目（51275447）；江苏省研究生实践创新计划项目（SJLX16_0589）
收稿日期：2016-11-30
修改日期：2017-01-20