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1、TMS320F240(SPWM),(,200240)SPWMTM S320F240,SPWM,DSPTM S320F240SPWMThe Applica tion of TMS320F240in S ine W ave Pulse W idthModula tion(S PWM)Zhu Ke,et al(Institute of E lectrical E lectronics&E lectrical D riving,S hanghai J iao T ong U niversity,S hanghai200240)AbstractThis paper presents the applic
2、ation of TM S320F240 digital signal processor ingenerating the SPWM w aveform s.The double pole equal-area algorithm is used to get variablefrequencies.It can realize higher speed and precision based on DSP processor and the output hasgood symmetry and low harmonic.KeywordsDSP,TM S320F240,SPWM1PWM,P
3、WM,SPWMDSP,DSPDSP(TM S320F240)SPWM,2SPWMSPWM,N,1,N3TMS320F240SPWMTM S320F240EV(),6PWM,6T1,T12,T,T1T21PWMT1,PWMT1,PWM,2,24,:2002-10-30420038M ICROPROCESSORSNo.4Aug.,20032PWMT1,0TN,N,N3,120i:Us=1+Msin(2Ni)T2(1)M,(1+M)T2(1-M)T2i:Si=-11+Msin(2Ni)T2d i=T2+M N2cos2N(i-1)-cos(2Ni)T2(2)iPWM:i=SiT(3)PWM,CM P
4、Ri=T2-Si2(4)N,T10,CM PRA B CN3,120PWM,N,5Hz144(N=144),PWM720HzDSP10M Hz,PWM13889,T=13889,T16945,T1T1PER=6945,M0.9,(4)CM PR,144,1 12;34;56CM PRCM PR0CM PR96CM PR48,ACTR12;34;56PWM,1445Hz,10Hz,1i136377273108109144CM PRi340434834834043540659665963404,334TM S320F240SPWM:DSP,PWM,1TM S320FC240 DSPControllersReferenceGuide2PeripheralL ibraryandSpecificDevices,TexasInstruments,1999.62.:,1999-103.DSPSPWM.,2001-01154:TM S320F240(SPWM)