超高速數(shù)據(jù)采集系統(tǒng)研究.pdf

1、華中科技大學(xué)碩士學(xué)位論文超高速數(shù)據(jù)采集系統(tǒng)研究姓名：黃颋挺申請學(xué)位級別：碩士專業(yè)：電力系統(tǒng)及其自動化指導(dǎo)教師：王少榮20070206IIAbstractWiththedevelopmentofmodernelectricallabatycommunicationimageacquisitionhigherhigheracquisitionspeedprecisionarerecommended.ButthespeedofADCiscon

2、strainingthedevelopmentofacquisitionsystem.UsuallyweusesomemethodwithlowspeedADCtosatisfythehighspeedrequiment.Fexampletheequivelentsamplingtechnologhsampledonlyonceinoneseveralcycletimesusetherepeatabilityofcyclesignalt

3、orefmthewholewave.Butthatmethodisonlysuitablefcyclesignal.Myaimistofindahighspeedacquisitonmethodwhichissuitablefallkindsofsignals.ThetimeinterleavedADCsystemwksas:MparallelADCswkwithasamplingfrequencyfsMthesystemoutputa

4、remultiplexedtogether.Thisgivesanoverallsamplingfrequencyfs.Thedrawbackwiththisstructureisthechannelmismatcherrswilloccurinthesystem.Thesemismatcherrswilldegradethesystemperfmanceiftheyareuncrectedthecrectionisacomplexwk

5、.It’srecommendedtouseonepieceofADCinultrahighspeeddataacquisitionsystem.Thewkofthispaperisintroducedasfollow:FirstanalysingtheactualityfutureofADchipdataacquisitionsystemSecondresearchingtherevisearithmeticofnonunifmdata

6、acquisitionbasedontwochannelparallelADThirdintroducingasystemusingtwopiecesofADsamplingtimesharingthenofferinganotheroneusingonepieceofultrahighspeedADFinalexplainingthekeypointsofsetupofultrahighspeeddataacquisitionsyst