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1、http://www.paper.edu.cn基于磁弹效应的差动式单旁路励磁索力传感器研究黄尚廉唐德东陈伟民重庆大学光电学院光电技术及系统教育部重点实验室，重庆，400044摘要：随着钢缆索大量运用在各种重大机电设备和大型建筑设施中，索力的在线健康监测对保证上述设施（设备）的营运安全越来越重要。基于磁弹效应的钢缆索索力测试方法与频率振动法和压力传感器法相比，具有测试动态响应快、使用寿命长、过载保护能力强等突出优点，适合大型结构的索力健康监测要求。但传感器的磁路结构主要是以被测钢缆索为铁芯的套筒式结构，安装和维护特别困难
2、，且受温度的影响很大，用简单的温度补偿曲线效果非常有限。本文阐述了基于磁弹效应的索力传感器原理，研究了温度影响机理，设计了差动式单旁路励磁磁路结构，进行了磁路分析，搭建实验系统，做了拉力试验。试验表明：传感器的结构是可行的，测量的重复性误差小于0.15%，满足实际测量需要。关键词：磁弹效应索力传感器温度补偿单旁路励磁StudyonCableTensionSensorwithDifferenceSingleBypassExcitationStructureBasedonMagnetoelasticEffectHuangS
3、hanglianTangDedongChenWeiminKeyLab.ForOptoelectronicTech.andSystemsofMOE,Dept.ofOptoelectronicEng.ChongqingUniversity,Chongqing400044Abstract:Withthegreatlotofsteelcablesusinginthevariousimportancemachinesandarchitectureestablishments,healthmonitoringthecableten
4、sionbecomemoreandmoreimportancetoensurethoseequipmentsorestablishments’safetyinnormallyworking.Contrastingwiththemethodofvibrationfrequencyandstraingages,themethodofmeasurementsteelcablestensionbasedonmagnetoelasticeffecthavealotofmerits,suchasit’sfrequencyofdyn
5、amicresponseishigh,it’slife-spanislongandit’scapacityofprotectingoverloadingisstrongetc,itisadapttorequirementofthehealthmonitoring.Butthestructuresofsensorismainsleevestructurethatmeasuredsteelcableservesasthecoreofprimaryandsecondarysolenoids,thisstructurebeco
6、meverydifficulttofixingandmaintenance,andthechangeoftemperaturewillstronginfluencemeasurementresult,thepurposeofcompensatingtemperatureerrorusingthetemperaturecompensationcurvewillnotsatisfactorybeachieved.Inthisarticle,theprincipleofcabletensionsensorbasedonmag
7、netoelasticeffectisexpounded,thetheoryoftemperatureinfluenceisresearched,thedifferencestructurebysinglebypassexcitationisdesigned,it’smagneticloopisanalyzed,thesystemofexperimentisdesigned,andtheexperimentsofpullingtensionarecarriedon.Theexperimentresultsindicat
8、edthatthestructureofsensorisfeasible,it’serrorsofrepetitionislessthan0.15%,andattaintherequirementofmeasurement.Keywords:MagnetoelasticeffectCabletensionSensortempera
