脉冲激光引信用PFM和PWM式LD驱动电路的研究X

1611Vol.16,No.11200411HIGHPOWERLASERANDPARTICLEBEAMSNov.,2004:100124322(2004)1121449204PFMPWMLDX,,,(204,210094):,,LD,LD,MOS,,LD,(10Hz20kHz);nsns,:;;(PFM);(PWM):TJ43.92:A,,,,,,,,[1],PFM()PWM()PFMPWM1Fig.1Circuitofpulsesemiconductorlaserpower11L();C;R,,,,MOSFET[24]V,RLC,[25]Ldidt+Ri+1Cidt=0(1)Ld2idt2+Rdidt+1Ci=0(2),R2L2-1LC0(3),(1)i=Ae-tsin(t+)(4)X:2003211207;:2004207215::(1974),,,,©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.:=R2L=1LC-R2L2(5)Kt=0,,,i=0Ldidt=V(6)(4),=0A=VLC-R24(7),3,A,,,,,,;A,;,2,2,2R01,C01D01,RP1,;R02C02D02,RP2,RP1RP2,,[6,7]LD,MOSQ01Q02MOSRP10,C01,,ns;RP20,C02,10kHz,40A,(10Hz10kHz);nsns,Fig.2SketchofPFMandPWMpulsedLDdrivercircuit2PFMPWM054116©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.3OrCAD/PSpicePerformanceAnalysis[8]3PWM,4310ns,2.5A,,8ns,42A;,30ns,10V,10ns,30ns,45A,56PFM,10kHz;RP01RP02,10nsLDFig.3SimulationsignalofPWMpulseddrivercircuit3PWMFig.4MeasuredsignalofthePWMpulseddrivercircuit4PWMFig.5SimulationsignalofPFMpulseddrivercircuit5PFMFig.6MeasuredsignalofthePFMpulseddrivercircuit6PFM4,,LD,:[1]MitchellRR,HuntsvilleAa.Dualfield2of2viewopticaltargetdetector[Z].WashingtonDC:Uspto.,4532867,1985.[2].[D].:,2002.5361,7781.(SunQY.Studyonprinciple,distancemeasurementandidentifyingtechniqueoflaserproximityfuzes.Nanjing:NanjingUniversityofScience&Technology,2002.5367,7781)[3],,,.[J].,2000,22(6):414417.(LinXH,SuGB,LiuJS.Studyonthehigh2peakcurrentandnarrow2pulsedrivingcircuitofsemiconductorlaser.PiezoelectricsandAcoustooptics.2000,22(6):414417)[4]BagwellBG,GemmellFS.Passiveopticalproximityfuze[Z].Motorola,Inc,Schaumburg,.Uspto4098191,1978.154111:PFMPWMLD©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.[5]ChenWY,LiuSY.Pinavalanchephotodiodesmodelforcircuitsimulation[J].IEEEJQuantumElectronics,1996,32(12):21052111.[6],.[J].,2001,13(6):717720.(LiuKF,ZhengWG.Themalfunctionanalysisandcountermeasureofheavypulsedlasersupply.HighPowerLaserandParticleBeams,2001,13(6):717720)[7],.[J].,2002,14(3):434436.(XieM,DingBN.DesignofpulsevoltagegeneratorwithrepeatfrequencyforDeSO2.HighPowerLaserandParticleBeams,2002,14(3):434436)[8].PSpice[M].:,1998.(GaoWH.ComputeranalysisanddesignofanalogcircuitforPSpiceprogram[M].Beijing:TsinghuaUniversityPress.1998)StudyonthePFMandPWMdrivercircuitofLDforlaserfuzeJIANGXiao2hua,CHENBing2lin,ZHANGHe,SUNQuan2yi(DepartmentofMechanicalandElectronicalEngineering,NanjingUniversityofScienceandTechnology,Nanjing210094,China)Abstract:Becauseoftheneedsofvariablepulsewidth,variablefrequencyandvariablepowerofLDinthelaserfuzecommunicationsys2tems,amodelofthedrivercircuitisbroughtoutforthesystembasedonthecircuitssprinciple.UsingretriggerablemonostablemultivibratorstoprovidethetriggersignalanddoubleMOSdrivertodrivetheLD,withalotofexperiments,emulationsandcomparisons,thevariablefrequency,pulsewidthandpowerdrivercircuitisdesigned.Andthepulsefrequencyandwidthcanbechangedeasilyforitssituations.Thedirvercircuithaslargerangefrefuencymodulatedfrom10Hzto2kHzandlargerangepulsewidthmodulatedfromseveralnanosecondstoseveralhundredsnanosec2onds.Sothewholesystemcapabilityandreliabilitycanbeimprovedgreatly.Keywords:Pulsedlaserfuze;Drivercircuit;PFM;PWM254116©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.