4、egulatingsystem, it isaDC speedcontrolsystem inthedevelopmentof themostmature, wherepower transmission systemiswidelyused.Ithastheadvantagesof fastdynamicresponse, stronganti-interferenceability.Feedbackclosedloopcontrol systemhasgood disturbancerejection performance, it
5、 is afeedbackloop for theforwardchannel allthe disturbanceeffect can effectivelybesuppressed. Usingthe speedfeedback andPIcontroller ofsingleclosedloop speedcontrolsystem can guaranteethesystem stabilityconditionstoachieve speedwithoutstaticerror.Keywords:matlab;Simulink