基于DSP的半导体激光器电源设计

华中科技大学硕士学位论文基于DSP的半导体激光器电源设计姓名：张前进申请学位级别：硕士专业：物理电子学指导教师：朱晓20060429ITITMS320LF2407,DSPPIDMATLABPIDPIDA/DPIDDSPVICORPIDIIAbstractSemiconductorlasersexhibitalotofveryimportantfeatureswhicharedifferentfromotherkindsoflaserssuchascompactness,lightweight,highwall-plugefficiency,longoperationallifetime,abilitytobedirectlymodulatedwiththeelectricalsignalofhighfrequencyupto10GHz.Theycanbeintegratedwithsimilarlyconstructiondevicessuchasmodulatororswitches.Thus,semiconductorlasershavebeenplayingmoreandmoreimportantroleinthefieldsofthenationaleconomy.Theelectricaldrivesourcesofsemiconductorlasershaveveryimportanteffectontheiroperationallifetimeandreliability.Thedevelopingdirectionofcurrentlaserpowersupplyisbeingdigital,beingintelligentizedandbeingmodularized.Thepapergivesoutthegropingresearchaboutthesecond-designwiththemicroprocessorTMS320LF2407whichTIcompanylatelypromulgatesasthecontrolcore,andtheelectricaldrivesourcesastheresearchobject.TakingadvantageoftheDSPchip'shighcalculatingabilityandtheabundantexternalfacilitiesthatareespeciallyusedforcontrolyield,wecanintegratethemicroprocessorfunctionfordigitalcontrol,theperipherycircuitsintoapieceofchip.Comparedwithcurrentpowersupplycontrolsystem,thehardwarequantityisconsumedlyreduced,andtheintegrationdegreeisincreasedinthissystem.First,accordingtothenewhardwarerequestofthischip,theoptimumrealizingprojectofthecontrolcircuit,low-pressurepowersupplycircuitandexternalreferencedcontrolcircuitisgaveoutotherhardwarepartsprimarilyincludethesamplingandprocessingofoutputcurrentanddrivingofdigitally-controlledpotentiometer.ThepaperbringsupthePIDalgorithmaimedatthecontrolsystem.Withthesystemasthesimulationobject,usingMATLABmodel,adoptingthePIDalgorithmtoproceedthecurrentclosedloopcontrol,IverifiedandanalyzedthePIDparameters.Thesimulationresultshowsthattheoutputcurrentwaveofthisprojecthasgoodperformancesuchasfasttransientresponse,littleovershootwhichmeetstotherequirement,improvessystemreal-timequalityandimprovesthewholeperformanceofthepowersupply.Finally,therelatedsoftwareofdigitalcontrolofthesystemisdesigned.Indetails,itincludesthesysteminitialization,therealizationofsoftstartandIIIA/Dtransformation,thecurrentsamplingfilter,thedriveofdigitally-controlledpotentiometerandPIDmodulatoretc..Andthenthesoftware'spossibilityisverifiedbyexperiment.Thecontrolsystemistotaldigitalcontrolwiththecontrolprojectrealizedallinsoftware,sothatwecanpromotesystemtohighergradeandperfectitsfunctioninconditionofcompletelynotchangingthehardware.Atthesametime,digitalcontrolcanbringtheadvantagesofstronganti-disturbance,highdependability,debugconvenience.Theexperimentresultprovedthatthecontrolsystemhaveexcellentinput-outputcharacteristic,canachievethedigitalcontrolofmodulepowersupply.KeywordsLaser'spowersupplyDSPVICORmoduleDigitally-ControlledPotentiometerPIDalgorithm111.11958C.TownesA.Schalow1960T.Maiman1021W/cm2[1]2PNPN1.2DPSSL123QCW50A1.2.1103−3PNPNPNPNImax[1]1.2.2[2]DSP41.3DSPN+1[3](1)SystemonChip(2)(3)[4]FPGADSPDSPPIDDSP5DSPPIDDSPDigitalSignalProcessor[5]DSPDSPDSPInternetDSPSCI1.4DSPTIDSPTMS320LF2407VICORTMS320LF2407DSP6PIDPIDMATLAB722.1/0A40A0V3.3V≤10mV50W400W≤40mA/Day≤100mA2.1.1[1]82-12-1iV∆iV∆1I∆1I∆R02I∆0I∆ViπVi2.1.250Hz220VViIoVo9V0V0A/D[6][7]2-22.1.3DSPDSPDSP2-3ADLD10TMS320LF2407VICOR2-3VICORDSPPIDVICORPIDPIDPIDPIDPIDDSPDSPDSP112.2VICORFlatpacFlatPACVICORDC-DC50600WFCC15EN55022B195Vdc/LUBusOKACOKLU40ms200W400W600WFlatPACVI-200DC-DC150200W195VdcFlatPAC400WFlatPACVI-ARMVI-200DC-DC1VI-ARMVI-ARM500/750W1000/1500W1/41/49698%100ACVI-ARMACVICOR300VDC-DCVI-ARMACVICORARM12ModuMate2-4VI-ARM2212()/2PtCVVε=∆=−22122/()CPtVV=∆−12400()9()205();185()PWtmsVVtVVt=∆==∆=∆2/78001385()CPtFµ=∆=C1C210Ω(2VI-200DC-DCVICORVI-200VI-J00DC-DC90%ZCSFMVI-200DC-DCVI-200VI-J00DC-DCVI-200VI-J00100-55-651310400Vdc195Vdc()50200W90%FlatPAC120Vac120Vac230Vac2-5Inputs1.MODDIS-2.MODDIS+3.ACOK-4.ACOK+5.BUSOK-6.BUSOK+7.ACinL18.ACinL29.ChassisGroundOutputs10.+PowerOut11.Out12.+Sense13.Trim14.-Sense15.-Out16.-PowerOut3.3V2.5V10KR6R8220VACEMCDC-DC3.3VDCPTC142-62.3TMS320LF24072.3.1TMS320LF2407TMS320LF2407LF2407TI1624XDSPC2000C2xxTMS320CPU33nsF24016[8]TMS320LF2407CMOSTMS320LF2407DSPTMS320LF2407TMS320LF2407[9](1)VonNeumanTMS320DSP15Cache24XI/O(2)DSPTMS32026TMS320262-72-7NN-1N-2N-3(3)DSP24x161632a16TREG16b2PREGcPREGCALU(4)DSPDSPLTDTMACDDSP(5)DSPDSP200nsTMS320200ns20nsLF240733nsDSPDSP2.3.2TMS320LF2407[10][11](1)CPU¾TMS320ClX/2X¾F240/C240¾33ns30MIPS32CALU816(2)¾32K×16FlashEEPROM4¾544×16/DARAM¾2K×16/SARAM(3)¾4¾6(4)¾¾/(5)17¾EVAEVB¾2166¾816PWM¾316¾3¾(6)0I/0(7)10S/H+Conversion=500nsA/D(8)CAN(ControllerAreaNetwork(9)SCI(10)SPI(11)PLLWD(12)3(13)5(14)JTAG1149.1IEEE(15)192Kx162.3.3TMS320LF2407TMS320F240[10]LF2407240xDSP24xALUARAU/CANI/OA/D18TITMS320F240TMS320LF2407LF2407F240I/OADLF24072.1TMS320LF2407TMS320F240TMS320LF2407Tms320F240888816×16ICLK16×16ICLKDARAM544×16B0B1B2544×16B0B1B2SARAM2KFlashROM32K16K144132I/O4028A/D1610S/H+500ns1610S/H+6usCANI/O2EV1PWM8/PWMEV12/PWM33ns20KHz50ns20KHz55423866SCISPIC5V3V5V342.4LF2407[12]TIDSP2-819DSPADCINAD202-8X9111VICORTrimDSPD