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1009－2552201510－0155－04DOI10.13274/j.cnki.hdzj.2015.10.042MATLABBUCKPID12121.2016202．201620DC/DC。DC/DCMATLABSimulinkBUCKPIDDC/DCPIDDC/DC。BUCKBUCKMATLAB。DC/DCBUCKMATLABTP391.9TM743ABUCKcircuitdesignandPIDclosedloopsimulationbasedonMATLABYANGZe-xuan12ZHENGJian-li121．SchoolofInformationScienceandTechnologyDonghuaUniversityShanghai201620China2．DigitalTextileandApparelTechnologyEngineeringＲesearchCenterofMinistryofEducationDonghuaUniversityShanghai201620ChinaAbstractThesimulationofDC/DCconverterwhichcanbetterguidanceandimprovetheactualcircuitdesignanddebugging．ButnoclosedloopsimulationmodeloftheexistingsimulationsoftwaredesignforDC/DCconverterishardtoclosedloopsimulationofthisproblemthispaperusingSimulinktoolboxofMATLABsoftwarecombiningwiththecharacteristicsofcircuitandthelooptransferfunctionisgivenandbuildstheclosed-loopsimulationcircuitmodelsimulatedtheBUCKcircuitloopofthePIcontrolrealizedthesimulationofDC/DCconverterofPIclosedloopfortheresearchandapplicationoftheDC/DCconverteritprovidestheidealtool．BasedonBUCKcircuitatthesametimeitwritestheMATLABdesignofBUCKcircuitparameterswhichsimplifiestheconverterdesignprocess．KeywordsDC/DCconverterBUCKcircuitMATLABclosed-loopsimulation2014－10－081988－。0DC/DC。BuckDC/DC。Buck。PIPIDfuzzy。Buck、PIMATLAB/Simu-link。OrCADSaberMATLAB。MATLAB—551—Simulink、。1BUCK1．11BUCKDC/DC。VsV0。1BUCKTL。iL。ＲI0U0。TsTTon。TiLiLDiLL。ULDＲU0。iL＜i0i0U0。TsTTs－Ton。1．2①D=U0/Ui=50%。②L=1－DU02fsI01L=1－DU02fsI0=1－0．5×122×20000=1．5×10－4H2L2～3。L4e－4H。③。CU0。CC=1－DU08×U0Lf23C=1－DU08×UoLf2=12×0．58×0．07×1．5×10－4×2×1042=1．79×10－4F4C7．5e－4F。④Ｒc0．8Ω。⑤PulseGenerator20kHz。1．3BUCKMATLAB、2－3。2BUCKMATLAB—651—3、2BUCK2．1BuckGvd=Vi1+sCＲc1+sLＲ+s2LC5ＲCESＲBuckESＲ。Gvd=2418×10－5s+122．5×10－8s2+2．5×10－5s+16＞＞num=1．92e－324＞＞den=22．5e－82．5e－51＞＞G=tfnumden＞＞marginG＞＞gridBode1．24*104rad/sγ=45．4。①1/5～1/420krad/sWc=1．24*104rad/s。②4545．4。。PIPID。MATLABSimulink。Simulink、PWM。①Simulinkgain、sumdivide。gainK200。②simulink/sources“pulsegenerator”1MHzgeneratormode1arm－bridgePI。2．2PIBodePIPI。。PI。。PIPI。PI。。PIGs=Kp1+1Tis()=KpTis+1Tis7P=5I=10。PI4。0．01sode23。、、5。。2．2．122V26V6。0．1%。2．2．2Ｒ1Ω1．6Ω40ΩBUCK、、7。1．2%。—751—4PI5PI、62．2．324V20V78。8。3BUCKMATLABSimulink163—851—77。5、MATLAB。1SchmidtＲO．Multipleemitterlocationandsignalparameterestima-tionJ．AntennasandPropagationIEEETransactionson1986343276－280．2ＲoyＲKailathT．ESPＲIT-estimationofsignalparametersviarota-tionalinvariancetechniquesJ．AcousticsSpeechandSignalPro-cessingIEEETransactionson1989377984－995．3ShanTie-junWaxMKailathT．Onspatialsmoothingfordirection-of-arrivalestimationofcoherentsignalsJ．SignalProcessingIEEETransactionson1985334806－811．4ChoiYH．Subspace-basedcoherentsourcelocalizationwithforward/backwardcovariancematricesJ．ＲadarSonarandNavigationIEEProceedings20021493145－151．5XuXuYeZhong-fuZhangYu-feng．ADeflationApproachtoDirec-tionofArrivalEstimationforSymmetricUniformLinearArrayJ．AntennasandWirelessPropagationLettersIEEE200651486－489．6ZhangXiao-feiLvWenShiYing．ANovelDOAestimationAlgo-rithmBasedonEigenSpaceC．MicrowaveAntennaPropagationandEMCTechnologiesforWirelessCommunications2007Inter-nationalSymposiumon2007551－554．櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀1542%99．691．242．122．699．890．140．220．095．683．525．113．9、。。6。95%。。1．STM32M．2012．2．GSMJ．200525748－52．3．MSP430LCDJ．200632841－43．4．AＲMM．2005．5．OV7670J．20131190－91．6．J．20091286－88．7．DSP5416J．DSP20072312189－191．櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀櫀158MATLAB。。1．MATLABM．2000．2．M．2000．3．MATLABM．2001．4．M．1995．5．PWMJ．20031752－3．6．M．2．2008．—361—