振动测试平台.doc

振动测试平台设计

摘要

随着计算机和软件技术的开展，虚拟仪器正在逐渐成为测试领域的开展方向，采用虚拟仪器实现振动测试与分析也成为振动测试的开展趋势。

为了解决工程振动问题,机械振动测试系统随着振动测试技术理论的开展和生产对测试的需求与日俱增,并有着广泛的应用领域。在工程现场的振动测试中,迫切需要低本钱、高精度、高效率,同时方便灵活的测量仪器。

振动测试试验系统是根据某些零部件振动测试的要求设计的,通过对被测系统施加各种波形的鼓励,使其产生振动,由传感器测量其振动的响应,将此信号进行调理放大,再由频谱分析仪获得系统的响应特性。

为此，本课题研究开发了以PC为硬件平台、以美国国家仪器(NI)公司开发的LabVIEW软件为开发平台，配合ADXL150传感器、和AT89C51组成的振动测试分析系统。采用虚拟仪器图形化编程语言LabVIEW组建的振动测试分析系统，实现了对振动信号的采集、处理和分析的目的。

关键词：虚拟仪器，振动测试，LabVIEW，ADXL150传感器，AT89C51

Designofvibrationtestingplatform

Abstract

Withthedevelopmentofcalculatorandthesoftwaretechnology,thevirtualinstrumentisbecomingthedevelopmentdirectionintextdomains,andusingvirtualinstrumenthasbeenadevelopmenttrendtorealizethetextandanalysisofvibration.

Asthedevelopmentandproductionoftechnologytheoryinvibrationtext,inordertosolvetheproblemofvibration,theneedoftextinvibrationtextsystemincreasewitheachpassingday,andhasextensivefieldofapplication.Thevibrationtextinprojectspot,itisurgenttoneedmeasuringinstrumentsthatarelowcost,highdegreeofaccuracy,highefficiency,andatthesametimeconvenient.

Thevibrationtextsystemisdesighedbasedondemandofsomeparts,tomakeitvibrate,allkindsofwaveformstimulationsareexertedtotextedsystem.,thenconditioningandenlargingthesignalthattransducermeasurestherespondingofvibrationinsystem,thenceforthobtaintherespondingcharacteristicsbyanalyzer.

Forthis,thetaskhasstudyedanddevelopedavibrationtextsystemwhichtakePCashardwareterrace,thelabviewthattheUnitedStatesnationinstrumentcompanyopendupassoftwareterrace,coordinatewithADXL150transducer,signalconditioninganddatacollecter..Adoptingthevibrationtextsystemwhichismadeupbyvirtualinstrumentfiguredprogramlanguagelabview,realizetheobjectivethatcollects,analyseandprocessvibrationsignal.

Keywords:Virtualinstrument,Vibrationtext,Labview,ADXL150transdu