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1、并联式混合动力汽车模糊控制能量管理策略摘要随着全球能源和环境问题的日益突出,开发低油耗、低排放的新型汽车成为当今汽车工业发展的首要任务。在这种背景下,融合传统燃油汽车和纯电动汽车优点的混合动力汽车成为当今最具应用前景的低排放、低能耗汽车。众所周知,要想取得最佳燃油经济性,降低尾汽排放和保持良好动力性,拥冇一个合理冇效的能量管理系统是至关重要的。由于混合动力汽车系统的复杂非线性,很难建立系统精确的数学模型。为此,本文针对并联式混合动力汽车捉岀了基于模糊控制的能量管理策略,其不依赖于系统精确的数学模型,具有较好的鲁棒性,可
2、以实现能量的合理分配。首先对并联式混合动力汽车工作模式和整车模型进行分析。接着,基于模糊控制的基本原理,以混合张动系统需求转矩和电池组荷电状态为输入,以发动机转矩为输出,捉出了模糊控制能量管理策略。再接着,利用MATLAB/Simulink建立能量管理模型和整车模型。最后将所组建的整车模型嵌入到ADVISOR屮,并在该软件屮对模型进行仿真研究。仿真结果显示釆用本文所提出的模糊控制能量管理策略,燃油经济性明显提高,并且HC、co等污染物的排放也明显减少。关键词:并联式混合动力汽车,模糊控制,能量管理策略,燃油经济性,动力
3、性FUZZYLOGICCONTROLENERGYMANAGEMENTSTRATEGYFORPARALLELHYBRIDELECTRICVEHICLEABSTRACTAstheenergysecurityandenvironmentalissuesaregettingmoreandmoreremarkableintheworld,developingcleanvehicleswithhighfueleconomyandlowexhaustemissionshasbecomeaprimarytaskintheautomot
4、iveindustry.Underthebackgroundmentionedabove,hybridelectricvehicle(HEV),whichincorporatestheadvantagesofboththeelectricvehicleandtheconventionalICE(internalcombustionengine)vehicle,isregardedasthemostpracticalsolutionforcleanvehiclesofhighfuelefficiency,lowemiss
5、ionsatpresent.Asweknow,ifwewanttogetthebestfueleconomicadvantageandreducethedischargedtail-gasandholdthebestdynamicperformance,itismostimportantthathavingagoodenergymanagementsystem(EMS).Duetothecomplexnonlinearhybridsystem,itisdifficulttoconstructanaccuratemath
6、ematicalmodelofthesystem.Fortheparallelhybridelectricvehicle(PHEV),thispaperproposedthefuzzylogiccontrolmanagementstrategy,whichdoesnotdependontheaccuratemathematicalmodel,hasgoodrobustnessandcanachieveenergydistribution.Firstly,theparallelhybridelectricvehiclew
7、orkingpatternandvehiclemodelisanalyzed.Secondly,thefuzzycontrolenergymanagementstrategyisputforwardbasedonthebasicprincipleoffuzzycontrolbyusingthetorquerequestofthehybridsystemandthebatterystateofcharge(SOC)asinputs,andtheenginetorqueastheoutput.Thirdly,usingMA
8、TLAB/Simulinkestablishenergymanagementmodelandvehiclemodel.Finally,thesimulationmodelthathasbeenestablishedisembeddedintoADVISORandstudiedinthesoftware・Simulationresu