基于模糊控制的直流电机PWM调速系统

PWM200666PWM(410082)(PWM)PWMIGBTPWMTM301.2[]B[]1000-3983(2006)01-0066-03PWMSpeedRegulatingSystemofDCMotorBasedonFuzzyControlLIYong,LUOLong-fu,XUJia-zhu,LIJi(CollegeofElectricalandInformationEngineering,HunanUniversity,Changsha410082,China)Abstract:Thispaperproposesapulsewidthmodulation(PWM)speedregulatingsystemofDCmotorbasedonfuzzycontrol.Thespeederroranditschangewereusedasfuzzystablevariable.Accordingtoasetoffuzzyrules,theoutputvariablewasselectedtocontroltheIGBTswitch.Inthisway,thePWMtechniquewasusedtodrivetheDCmotor.Thesimulationresultsshowedthatthesystemcoulddepresstheovershootandimprovetheresponseandsteadystateperformance.Keywords:fuzzycontrol;DCmotor;PWM;speedregulating1PWMPWMPWM21PWM)(kwr)(kwaeceαc1k2k3k1PWMk1k2k3ececawr(k)+−1/Z+−1/swa(k)2006167e2.1ffffipLRu)(+=(1)Ω++=fafaaaaiGipLRu)((2)puiRLfaΩafGJafafeiiGT=(3)LeTRJpT+Ω+=Ω)((4)ΩRLT2.22eceαceceαc]4,3[1ifeisNLandceisNLthenαcisPLαcMamdanimax-min[-11]31eceαc42.3PWMNIGBTVD5IGBTGEu0i0u6t=0IGBT0u=E21ceeNLNMNSZPSPMPLNLPLPLPLPLNMZZNMPLPLPLPMPSZZNSPLPMPSPSPSZZZPLPMPSZNSNMNLPSZZNMNSNSNMNLPMZZNSNMNLNLNLPLZZNMNLNLNLNL34eceαcbcecαcNMNSZPSPMNLPL10.50-10.80.400.40.81NLNMNSZPSPMPL10.50-10.80.400.40.81NLNMNSZPSPMPL10.50-10.80.400.40.81ca0.50-0.5e10.50-0.5-1-10cePWM200668t=1tIGBT0TIGBTEETtEtttUonoffononα==+=0(5)ontTTontont563MATLAB/SIMULINKaR=0.5ΩaL=0.003HJ=0.01672mkg⋅G=fafiG=0.8ΩR=0.0167wr=200rad/s1k=1/2002k=13k=310200×IGBT2kHz0.6s50mN⋅)(tePWM)(tα)(twTe74PWMPWM7[]2005-04-061982-degreee(rad·s-1)w(rad·s-1)Te(Nnm)EIGBTVD+−0u0ififuuGEu0EIGBTi0VDu0Mufif200150100500-5000.20.40.60.81t(s)00.20.40.60.81t(s)a(°)2001000-100-200-300-400-50025020015010050000.20.40.60.81t(s)25020015010050000.20.40.60.81t(s)