光散射顆粒物濃度測量儀特征參數(shù)的標定方法研究.pdf

1、南京理工大學碩士學位論文光散射顆粒物濃度測量儀特征參數(shù)的標定方法研究姓名：于曉申請學位級別：碩士專業(yè)：光學工程指導教師：卞保民20070601英文摘要ABSTRACTInordertorealiT配measurenlentofaerosolmassconcen仃aboninrealtimebyconcentrationmeasuringimmanentthecalibrationoftwocharacteristicparameters

2、inthemethodisstudiedfirstlyThroughthemeasurementofsuspendedparticulatemattersample，twocharacteristicparameters(equivalentparameterandsensitivitycoefficient)isobtainedbythenonlinearregressiontoGaussNewtonmethodtherelation

3、ofthestabilityofcharacteristicparameterandconcentrationmeasuringinsmmaentrangeisfurtheranalyzedThevarietylawofcharacteristicparameterisalsoanalyzedbyminimizationmethod，amethodofequivalentparameterandsensitivitycoefficien

4、tcalibrationisputforward，anditisusedtocalibratetheparameteroftheorysampleIthasbeenshownbyexperimentationthatthemeasurementrelativeelTOrislowerthan10％betweenconcentrationmeasuringinslrurnentandSIDEPAKAM510withinlowerthan5

5、mg／m3TheproposeofcharacteristicparametercalibrationmethodisalsoofgreatsignificanceforonlinemeasurementrealizationofconcentrationmeasuringinstrumemSecondly，thecostofconcentrationmeasuringinstrumentwhichcontains2048voltage

6、channelsistoohi曲，SOthevoltagechanneloptimizationproblemisdlscmsedFirsttheinfluencethatthenumberofvoltagechannelexertsonmeasllrementaccuracyandstabilityunderuniformitypartitionisstudiedThentheoptimizationofvoltagechanneld

7、ivisionwayisrealizedaccordingtothecharacteristicofparticlescatteringsignalvoltagescopedistributiongeom砌cproportionintervalvoltagechanneldivisionwayisusedthechannelvoltageintervalissmallinthelowvoltagetip，andremarkablyinc

8、reasesinthehJ曲voltage咖Theresultindicatesthatnumericalv舭ofmassconcentrationearattainmeasurementprecisionwhichistallandtherelativelyelTOrofconcentrationmeasuringinslmmentandSIDEPAKAM510islessthanpercentoftenusingfourvoltag