光纤光栅三向力传感器的应变传递特性研究
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摘要
在传感器精确测量轮胎—路面接触产生的三向力中,光纤光栅的封装结构很重要。构建了光纤光珊三向力传感器的应变传递理论模型,运用有限元法和实验对比分析了传感器三个方向的应变传递影响因素及特性。实验表明,F_x、F_y方向的应变传递具有相似性,粘贴长度对应变传递率影响较大,粘贴宽度对应变传递率影响较小,粘贴厚度小于0.5 mm时会影响应变灵敏度,F_z方向传递率超过100%,具有应变增敏效果。确定了粘接层的最佳组合,F_x、F_y方向的传递率可达90%以上。
In order to make the sensor accurately measure the three-dimensional force generated by the tire-road contact,the package structure of FBG is particularly important.The strain transfer theory model of FBG Three-dimensional Force Sensor was constructed.The influence factors and characteristics of the strain transfer in the three directions of the sensor were analyzed by the finite element method and the experiment.The experiment shows that the strain transfer in the direction of F_x and F_y is similar,the effect of the paste length on the transfer rate is greater,and the paste width has less influence on the transfer rate.When the paste thickness is less than 0.5 mm,the strain sensitivity is affected,and the transfer rate in the F_z direction exceeds 100%,with strain sensitizing effect.The optimum combination of adhesive layers was determined,and the transmission rate in the direction of F_x and F_y was up to 90%.
In order to make the sensor accurately measure the three-dimensional force generated by the tire-road contact,the package structure of FBG is particularly important.The strain transfer theory model of FBG Three-dimensional Force Sensor was constructed.The influence factors and characteristics of the strain transfer in the three directions of the sensor were analyzed by the finite element method and the experiment.The experiment shows that the strain transfer in the direction of F_x and F_y is similar,the effect of the paste length on the transfer rate is greater,and the paste width has less influence on the transfer rate.When the paste thickness is less than 0.5 mm,the strain sensitivity is affected,and the transfer rate in the F_z direction exceeds 100%,with strain sensitizing effect.The optimum combination of adhesive layers was determined,and the transmission rate in the direction of F_x and F_y was up to 90%.
引文
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[2] 孙圣和.现代传感器发展方向[J].电子测量与仪器学报,2009,23(1):1-10.
[3] MIZUTANI Y,GROVES RM.Multi-functional measurement using a single FBG sensor[J].Experimental Mechanics,2011,51(9):1489-1498.
[4] LEUNG C K Y,WAN K T,INAUDI D,et al.Review:optical fiber sensors for civil engineering applications[J].Materials & Structures,2015,48(4):871-906.
[5] 李向舜.分布式光纤光栅传感器波长检测新技术简述[J].传感器世界,2003(11):1-5.
[6] SCHUBEL P J,CROSSLEY R J,BOATENG E K G,et al.Review of structural health and cure monitoring techniques for large wind turbine blades[J].Renewable Energy,2013,51(2):113-123.
[7] 李川,吴晟,刘建平,等.贴片式光纤Bragg光栅应变传感器[J].仪表技术与传感器,2005(7):3-4.
[8] 吴入军,郑百林.表面粘贴式FBG传感器应变传递分析[J].仪表技术与传感器,2016(8):14-17.
[9] 刘春桐,李洪才,赵兵,等.大型装备应变检测中光纤Bragg光栅的应用研究[J].激光与红外,2007,37(10):1091-1094.
[10] 郑卜祥,宋永伦,张东生,等.光纤Bragg光栅温度和应变传感特性的试验研究[J].仪表技术与传感器,2008(11):12-15.
[11] PAK Y E.Longitudinal shear transfer in fiber optic sensors[J].Smart Materials & Structures,1992(1):57-62.
[12] LI W Y,CHENG C C,LO Y L.Investigation of strain transmission of surface-bonded FBGs used as strain sensors[J].Sensors & Actuators A Physical,2009,149(2):201-207.
[13] HER S C,HUANG C Y.Effect of coating on the strain transfer of optical fiber sensors[J].Sensors,2011(11):6926-6941.
[14] 李银玉,邱野,王全保,等.非轴向力下粘贴式FBG传感器应变传递机制研究[J].高技术通讯,2013,23(5):513-518.
[15] 田石柱,张国庆,王大鹏.表面式光纤布拉格光栅传感器应变传递机理的研究[J].中国激光,2014,41(8):145-150.
[16] 孙阳阳,王源,章征林,等.表面粘贴式光纤布拉格光栅应变传递规律分析与实验研究[J].功能材料,2016,47(7):7046-7050.
[17] 吴入军,郑百林,陈田,等.光纤布拉格光栅传感器应变传递耦合机理分析[J].光子学报,2017(10):1006003.
[18] 王彪,李昂,孙洋,等.表面粘贴式MEMS应变传感器的应变传递分析[J].仪器仪表学报,2016,37(11):2606-2612.
[19] 李红,祝连庆,刘锋,等.裸光纤光栅表贴结构应变传递分析与实验研究[J].仪器仪表学报,2014(8):1744-1750.
[20] 任亮.光纤光栅传感技术在结构健康监测中的应用[D].大连:大连理工大学,2008.
[21] 杨君琦.应变传感器的应变传递理论及传感特性研究[D].长沙:中南大学,2013.