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第1页共22页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第1页共22页英文翻译Chapter4portablerotatingmachineryvibrationmonitoringsystemdesignWiththemodernizationofenterprisedevicemanagement,howtomakeequipment,continuous,reliable,safeandefficientoperationtomeettherequirementsofmodernenterprisemanagement,isparticularlyimportant.Therotatingmechanicalequipmentduringoperationofthevibrationsignalsgeneratedalotofhiddeninformationthatcanhelppeopletocorrectlyjudgethevarioustypesofrotatingmachineryduringoperationofthestate.Theoryofvibrationanalysisandconditionmonitoringtechnologyisinseparableorganisms.Basedonvibrationanalysisofrotatingmachineryconditionmonitoringsystemistoruntheprocessofrotatingmachineryvibrationinformationgeneratedbythecoretodeterminerotatingmachineryisrunningortheanomalyoccurred.4.1ThesystemworksThesystemworks:Theacquisitionrotatingmachineryvibrationsensorequipmentrunningintheprocessofthevibrationsignals,afterfilteringhardwarecircuitamplification,A/Dconversion,andthenuploadthedatathroughtheUSBinterfacetoacomputerforprocessing;hostcomputercanbethedatacollectorsamplerate,channelselectionandsothecorrespondingparametersettings;throughtheapplicationofthesoftwareforsignalanalysisandprocessingandanalysisofpaint-relatedwaveforms;andthen,throughtherelevantwaveformanalysisandspectrumanalysistodeterminethehealthstatusofmachineryandequipment.4.2SystemStructureDiagramDesignconceptofthissystemisthetop-downdesign,thefirstdevicetoachievetheoverallplanningfunction,andthendividethetotalworkfunctiontothehardwareandsoftwaresub-modulestorealizethesystemoveralldesignblockdiagramshowninFigure1.第2页共22页第1页共22页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第2页共22页4.3VibrationspeedsensorselectionVibrationsensor(Sensor)isacollectioncanbegeneratedbyrotatingmachineryvibrationsignals,accordingtoacertainlawofvibrationsignalsareconvertedtotheircorrespondingphysicalquantityorsignalandanotheroutputdevice,istoachievelarge-scalerotatingmachineryconditionmonitoringofanimportantlinkIfthereisnovibrationsensortotheoriginalvibrationsignalsaccuratelycaptureandconversion,rotatingmachineryconditionmonitoringcannotbeachieved.Bycollectingvibrationsignalofadifferentnaturecanbeclassifiedasfollows:acceleration,velocity,displacementandsoon.Vibrationsensorselectionmusttakeintoaccountsensorperformancerequirements;sensorstaticanddynamiccharacteristics.Vibrationsensorstaticcharacteristicsofthemainparametersare:linearity,resolutionandsensitivity.Thedynamiccharacteristicsofvibrationsensorsusedittorespondtocertaincriteriatorepresenttheinputsignal.Astherotatingmachineryvibrationsignalsoutputsinusoidalsignal,sothedynamiccharacteristicsofsensorsusedtoindicatethefrequencyresponse.Rotatingmachineryvibrationtestcommonlyusedtypesofsensorsarepiezoelectricsensorsandinertialratesensors.Piezoelectricsensorsusedfornon-rotatingcomponentsoftheaccelerationmeasurement.Itischaracterizedbytheuseofawidefrequencyrange,usually0.2~10kHz,therefore,itissuitableforhigh-speedrotatingmachineryvibrationtests.Thequalityofpiezoelectricaccelerationsensorissmall,easytoinstallinmechanicalequipment.However,piezoelectricsensorsarehighimpedance,weaksignalsensor,measuringthesitevulnerabletoelectromagnetic,acousticandthermalaircurrentsandotherinterference,sothattheoutputsignalcontainsthepartofnon-vibrationacceleration...