汽油机加速瞬态油膜补偿技术研究
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摘要
为了提高汽油机空燃比控制精度,满足动力性、经济性与排放性能要求,对汽油机加速瞬态工况油膜动态效应补偿技术进行研究。采用Elman神经网络对油膜参数进行辨识,通过仿真软件建立了汽油机油膜加速瞬态补偿器模型。基于mototron快速原型开发平台对设计的油膜补偿器模型进行策略移植、下载与标定,并通过离线仿真和试验进行验证。结果表明:Elman神经网络可以对汽油机油膜参数进行准确辨识,并且可以消除油膜动态效应对空燃比的影响,油膜补偿器能对汽油机加速瞬态工况下喷油进行有效补偿,更好的控制发动机加速瞬态过程中的空燃比。
A method of oil film dynamic compensation technology for gasoline engine in the acceleration transient condition was studied in order to improve the Air-Fuel Ratio( AFR) control accuracy and meet the requirements of gasoline engine power,economy and emission properties. The parameters of oil film were identified by using the Elman neural networks; an oil film compensator model for gasoline engine in the acceleration transient condition was established by simulation software. Based on MotoTron rapid prototyping development platform,the oil film compensator model was transplanted,downloaded,calibrated,and verified by simulation and experiment. The results show that the Elman neural network can identify the parameters of oil film of gasoline engine,and can eliminate the oil film dynamic effect on the AFR; the oil film compensator can compensate effectively for injection of gasoline engine; and AFR can be controlled effectively in the acceleration transient conditions.
A method of oil film dynamic compensation technology for gasoline engine in the acceleration transient condition was studied in order to improve the Air-Fuel Ratio( AFR) control accuracy and meet the requirements of gasoline engine power,economy and emission properties. The parameters of oil film were identified by using the Elman neural networks; an oil film compensator model for gasoline engine in the acceleration transient condition was established by simulation software. Based on MotoTron rapid prototyping development platform,the oil film compensator model was transplanted,downloaded,calibrated,and verified by simulation and experiment. The results show that the Elman neural network can identify the parameters of oil film of gasoline engine,and can eliminate the oil film dynamic effect on the AFR; the oil film compensator can compensate effectively for injection of gasoline engine; and AFR can be controlled effectively in the acceleration transient conditions.
引文
[1]侯志祥,吴义虎,申群太.车用汽油机过渡工况空燃比的先进控制策略[J].内燃机学报,2003,21(5):370-373Hou Z X,Wu Y H,Shen Q T.Advanced control strategies for engine transient air/fule ratio[J].Transactions of Csice,2003,21(5):370-373(in Chinese)
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[3]吴峰胜.直列三缸摩托车发动机电控系统的设计与分析[D].武汉:华中科技大学,2007Wu F S.Design and analyse for up-right 3-cylinder motorcycle engme electronic control system[D].Wuhan:Huazhong University of Science and Technology,2007(in Chinese)
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[6]Al-Olimat K,Chandakly A,Jamali M.Adaptive air-fuel ratio control of an si engine using fuzzy logic parameters evaluation[R].SAE Paper 2000-01-1246
[7]Takahashi S,Sekozawa T.Air-fuel ratio control in gasoline engines based on state estimation and prediction using dynamic models[R].SAE Paper 990566
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[10]陈林林,魏民祥.基于模型辨识的汽油发动机空燃比瞬态控制研究[C]//第二十七届中国控制会议,北京:北京航空航天大学出版社,2008Chen L L,Wei M X.On transient air/fuel ratio control for gasoline engine on the basis of model identification[C]//27th session of the Chinese Control Conference Proceedings,Beijing:Beihang University Press,2008(in Chinese)
[11]顾维东,万冬,杨延相,等.汽油机燃油动态特性的标定[J].汽车技术,2006,(1):5-8Gu W D,Yang Y X,Cai X L,et al.Calibration of fuel dynamic charateristics of gasoline engines[J].Journal of Automotive Technology,2006,(1):5-8(in Chinese)
[12]郭春梅.点燃式发动机建模与空燃比控制策略的研究[D].天津:天津大学,2003Guo C M.Research on modeling and air/fuel ratio control of spark-ignition engine[D].Tianjin:Tianjin University,2003(in Chinese)
[13]高龙士,计时鸣.基于Elman神经网络的汽车发动机故障诊断及其实现[J].机械科学与技术,2010,29(9)Gao L S,Ji S M.Automobile engine fault diagnosis and its implementation based on elman neural network[J].Journal of Mechanical Science and Technology for Aerospace Engineering,2010,29(9)(in Chinese)
[14]陆文昌,高海宇,孟鑫,等.基于MotoTron平台的ETC控制系统设计与试验研究[J].内燃机工程,2010,31(6)Lu W C,Gao H Y,Meng X,et al.Rapid prototyping and validation for ETC system based on MotoTron development platform[J].Journal of Chinese Internal Combustion Engine Engineering,2010,31(6)(in Chinese)
[15]刘玉长,罗广德.汽油机控制参数的台架标定[J].内燃机,2010,12(6):37-41Liu Y C,Luo G D.Parameter calibration on engine bench for ecu of gasoline engine[J].Journal of Internal combustion Engines,2010,12(6):37-41(in Chinese)
[2]危亮.汽油机过渡工况油膜机理分析及空燃比控制策略研究[D].长沙:长沙理工大学,2012Wei L.Analysis on oil film charateristic and study on afr control strategy under transient condition of gasoline engine[D].Changsha:Changsha University of Science&Technology,2012(in Chinese)
[3]吴峰胜.直列三缸摩托车发动机电控系统的设计与分析[D].武汉:华中科技大学,2007Wu F S.Design and analyse for up-right 3-cylinder motorcycle engme electronic control system[D].Wuhan:Huazhong University of Science and Technology,2007(in Chinese)
[4]舒咏强.油膜动态效应及瞬态空燃比控制的研究[D].武汉:华中科技大学,2009Shu Y Q.Study on the fuel film dynamic effects and air fuel ratio control for gasoline under transient conditions[D].Wuhan:Huazhong University of Science and Technology,2009(in Chinese)
[5]CF Aquino.Transient A/F ratio control characteristic of the 5 liter central fuel injection engine[R].SAE Paper1981-810494
[6]Al-Olimat K,Chandakly A,Jamali M.Adaptive air-fuel ratio control of an si engine using fuzzy logic parameters evaluation[R].SAE Paper 2000-01-1246
[7]Takahashi S,Sekozawa T.Air-fuel ratio control in gasoline engines based on state estimation and prediction using dynamic models[R].SAE Paper 990566
[8]马宗正,程勇,纪少波,等.汽油机起动工况附壁油膜挥发过程的计算分析[J].燃烧科学与技术,2010,16(6):503-507Ma Z Z,Cheng Y,Ji S B,et al.Study on wall-film evaporation of gasoline engine during start[J].Journal of Combustion Science and Technology,2010,16(6):503-507(in Chinese)
[9]朱航.基于模型的过渡工况空燃比控制的应用研究[D].北京:清华大学,2003Zhu H.Study on the application of model based control for air fuel ratio under transient conditions[D].Beijing:Tsinghua University,2003(in Chinese)
[10]陈林林,魏民祥.基于模型辨识的汽油发动机空燃比瞬态控制研究[C]//第二十七届中国控制会议,北京:北京航空航天大学出版社,2008Chen L L,Wei M X.On transient air/fuel ratio control for gasoline engine on the basis of model identification[C]//27th session of the Chinese Control Conference Proceedings,Beijing:Beihang University Press,2008(in Chinese)
[11]顾维东,万冬,杨延相,等.汽油机燃油动态特性的标定[J].汽车技术,2006,(1):5-8Gu W D,Yang Y X,Cai X L,et al.Calibration of fuel dynamic charateristics of gasoline engines[J].Journal of Automotive Technology,2006,(1):5-8(in Chinese)
[12]郭春梅.点燃式发动机建模与空燃比控制策略的研究[D].天津:天津大学,2003Guo C M.Research on modeling and air/fuel ratio control of spark-ignition engine[D].Tianjin:Tianjin University,2003(in Chinese)
[13]高龙士,计时鸣.基于Elman神经网络的汽车发动机故障诊断及其实现[J].机械科学与技术,2010,29(9)Gao L S,Ji S M.Automobile engine fault diagnosis and its implementation based on elman neural network[J].Journal of Mechanical Science and Technology for Aerospace Engineering,2010,29(9)(in Chinese)
[14]陆文昌,高海宇,孟鑫,等.基于MotoTron平台的ETC控制系统设计与试验研究[J].内燃机工程,2010,31(6)Lu W C,Gao H Y,Meng X,et al.Rapid prototyping and validation for ETC system based on MotoTron development platform[J].Journal of Chinese Internal Combustion Engine Engineering,2010,31(6)(in Chinese)
[15]刘玉长,罗广德.汽油机控制参数的台架标定[J].内燃机,2010,12(6):37-41Liu Y C,Luo G D.Parameter calibration on engine bench for ecu of gasoline engine[J].Journal of Internal combustion Engines,2010,12(6):37-41(in Chinese)