用于轮胎胎冠裂纹检测的磁致伸缩触觉传感器研究  

Research on Magnetostrictive Tactile Sensor for Tire Crown Crack Detection

作　　者：赵智忠[1] 沈鑫 王博文[1] 王志强 ZHAO Zhi-zhong;SHEN Xin;WANG Bo-wen;WANG Zhi-qiang(Hebei University of Technology,State Key Laboratory of Reliability and Intelligence of Electrical Equipment,Hebei Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability,Tianjin 300130,China;School of Civil Engineering and Transportation,Hebei University of Technology,Tianjin 300130,China)

机构地区：[1]河北工业大学,省部共建电工装备可靠性与智能化国家重点实验室,河北省电磁场与电器可靠性重点实验室,天津300130 [2]河北工业大学土木与交通学院,天津300130

出　　处：《仪表技术与传感器》2022年第7期11-15,共5页Instrument Technique and Sensor

基　　金：国家自然科学基金项目(52077052);河北省自然科学基金项目(E2019202315)。

摘　　要：针对轮胎胎冠花纹复杂,人工观测裂纹容易漏检的难题,模拟动物毛发感知机理设计了一种新型磁致伸缩触觉传感器阵列。以铁镓合金片(Galfenol)作为悬臂梁敏感元件,使用有限元软件确定悬臂梁最佳长度然后实验验证。推导传感器的输出特性模型,实验测得传感器灵敏度为170.5 mV/N。将3个传感单元集成,形成1×3传感器阵列。传感器安装在滑轨工作台上,触头在胎冠上滑动。通过MATLAB分析传感器输出的动态信号可以识别胎冠花纹中的裂纹。Aiming at the problem that the tire crown pattern is complex and the crack is easy to be missed by manual observa⁃tion,a new magnetostrictive tactile sensor array was designed by simulating the sensing mechanism of animal hair.Galfenol was used as a sensitive element of a cantilever beam.The optimal length of cantilever beam was determined by finite element software and then veri⁃fied by experiment.An output characteristic model of the sensor was deduced.The experimental sensitivity of the sensor is 170.5 mV/N.Three sensing units were integrated into a 1×3 sensor array.The sensor was installed on the slide rail workbench,the contact sli⁃ded on the tire crown.The dynamic signal output by the sensor can identify cracks in the crown pattern by MATLAB.

关 键 词：胎冠裂纹 铁镓合金片 触觉传感器 悬臂梁 动态信号 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]