小波變換型分析儀器的研制與分析化學信號處理.pdf

1、中國科學技術大學碩士學位論文小波變換型分析儀器的研制與分析化學信號處理姓名：龐春艷申請學位級別：碩士專業(yè)：分析化學指導教師：邵學廣2000.5.1AbstractWaveletanalysisisanewmathematicaltechniquedevelopedinrecentyears，andhasbeenusedsuccessfullyinmanyfieldsInthesethesis，avoltammetricanalyzerw

2、iththeonlinewavelettransform(WTvoltammetricanalyzer)wasdeveloped，andapplicationsoftheanalyzerinelectroanalyticalchemistry，thederivativecalculationofanalyticalsignalsusingcontinuouswavelettransform(cvcr)andtheresolutionof

3、overlappinganalyticalsignalsusinganimmunealgorithmandgeneticalgorithmwerestudied，respectivelyWinlathoroughreviewofreferencesthebasictheoriesandalgorithmsofthewavelettransform(WT)，includingtheconceptsandprinciples，Manatal

4、gorithmandmodifiedMallatalgorithmwereintroducedandapplicationsofthe、vTinanalyticalchemistryduringrecentyears、、asreviewedindetailBecausetheonlineⅥTisabletodeeompoffesampledsignalsimultaneouslywiththeprogressofsamplingavol

5、tammetrieanalyzerwiththeonline、vTwasdeveloped11leⅦTvoltanunetricanalyzergivesallthecomponentscontainedinthesampledvoltammogramBytheonlineanalysisofstaircasevoltammetricsignals，linearsweepvoltammetricsignalsandsquarewavev

6、oltanunetricsignalsitwasdemonstratedthatresultsofapplyingthe、vTvoltarnmetricanalyzertovoltarmnetricanalysis，includingdenoising，qualitativeanalysisandquantitativeanalysisweresatisfactoryThisworkaotonlypromotedthedevelopme

7、ntofⅥ叮butalsoprovidedusefulinformationforthedevelopmentofnewanalyticalinstrumentIlltermsofthecharacteristicofHaarwavelettransform，anovelmethodbasedoncontinuouswavelettransformusingHaarwaveletfunctionwasproposedforapproxi

8、matederivativecalculationofanalyticalsignalsAnapproximatenthderivativeofananalyticalsignalGallbeobtainedconvenientlyusingthemethodTheresultsobtainedfromconventionalmethodswerecomparedwitbtheproposedCWTmethod，itWaSdemonst

9、ratedthattheresultsaresimilarforsignalswithoutnoisebuttheproposedCWTmethodissuperiortoconventionalmethodsfornoisysignalsneapproximatefirstandsecondderivativeofthephotoacoustiespectraofPr(Gly)3C133H20andPrCl36H20werecalcu

10、latedusingtheproposedCWTmethod，thepositionofpeaksinthederivativescoincidedveryweltwiththecorrespondingenergytransitioubandsTh速methodmayprovideanalternativewayforthederivativecalculationofalialytiealsignalsBecausethe“peak

11、resoluter’method，whichisusedtoresolveoverlappingvoltammetricpeaks，hasmanylimitations，thereasonofitwaspresentedandanovelimmunealgorithmwiththeaidofgeneticalgorithmwasproposednlealgorithmwasusedtesolveoverlappingpeakswhich