用相位推算法實(shí)現(xiàn)瞬時(shí)測(cè)頻.pdf

1、電子科技大學(xué)碩士學(xué)位論文用相位推算法實(shí)現(xiàn)瞬時(shí)測(cè)頻姓名：王偉旭申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：電路與系統(tǒng)指導(dǎo)教師：張玉興20070301AbstractAbstractmMisdevelopingsince70soflastcenturypromptedbyEWAndmoreandmoremMmethodsareintroducedTheclassicmethodforIFMisdelaylineandphasedetectionIt’Smain

2、ideaissplitasignalintotwopathways，andthesetwosignalsaredelayedbydifferenttime嬲weknownforasinewavethedifferencetimedelaymeallsthattheyhavedifferentphase，andwealsoknowthatthephaseofasinewaveisrelatedwithit’sfrequencysoifwe

3、Cangetthephasedifferencebetweenthesetwopathwaysaequationcarlbeconstructedtocalculatethefrequencyofthesinewave，AlthoughdelaylineandphasedetectionisaimportantmethodforIFMit’smeasBleprecisionisnotsatisfactionSomanypeoplepay

4、tlleirattentionOilthealgorithms，sincethiswayCangetmorehi曲measureprecisionasthecomputerandsemiconductordevicedevelopmentItistruethatalgorithmscangethi曲measureprecisionbutitcostmoretime，becausethedJ【百taldevicesuchasDSPandF

5、PGAneedtimetocalculatetheresultAsmentionedbefore，thedelaylineandphasedetectionmethodcoversthemainideafor腰MAlmostallthe腰Mmethodaccordingtoaprocess：frequencytransformedtophaseinformationandthentoamplitudeinformationFrequen

6、cyistransformedintophasebydelayline，andphaseinformationistransformedintoamplitudebythephasedetector。ThispaperintroducedSOmeCOstateⅡMmethodsandalgorithmsAndpaymoreattentiononthe球Malgorithmsanalyzedthephasecalculatemethoda

7、ndsomesimulationresultsgainedrealizedallⅢMmoduleandgetcredibleresultChapter1andchapter2ofthispaperintroducedthemainmet_hodandaigorithmsfor球M，inchapter3，discussedhowtealizethis琿MmoduleInchapter4youCangetsomesimulationresu