包生重;裴海灵;周乃君;陈宏德
中南大学能源科学与工程学院
摘要：针对四缸四冲程汽油发动机,建立了合理的发动机数学模型,并对模型发动机进行仿真标定实验,获得喷油MAP图。根据发动机运行特点及控制要求,在均值模型的基础上,建立了稳态部分负荷、瞬态、怠速三种主要运行工况下的控制器模型。并给出了以上模型在Mat-lab/Simulink环境下的结构框图和综合仿真过程。仿真结果表明:控制器能够判断不同工况,并自动切换到相应的控制模块,使空燃比达到预期要求,具有良好的控制性能,控制策略与控制算法可行,为电控系统的进一步研究奠定基础。
关键词： 汽油发动机;;空燃比;;电控;;均值模型;;建模;;仿真
Abstract: An engine model was established
for the 4 cylinder 4 stroke gasoline engine.And the fuel MAP of the mode engine
was obtained by scaling experiment.According to the engine operating feature
and control requirements,the controller models was made for three main types
operating conditions,stable operating condition,transient condition and idle
speed condition.Further more,the architectures of these models and the general
simulating processes was described.The results show that the controller can
choose the relevant controller for different operating condition
automatically;the air/fuel ratio reaches the expected value;the controller has
better control performance and reference value;this can be the basic of the
electric control system for further study.
Keywords: Gasoline Engine;Air/Fuel
Ratio;Electronic Control;Mean Value Model;Simulation
参考文献：
[1]孟嗣宗,郭少平,张文海.发动机精确空燃比控制方法的研究[J].内燃机工程,1999,(2):70~75.
[2]陈超,王绍光,康晓敦.基于Matlab/Simulink的汽油机电控系统仿真[J].内燃机工程,2004,24(5):23~17.
[3]Crossley P R and Cook J A.A nonlinear
engine model for drivetrain system development[C].IEE International
ConferenceControl’91,2:921-925,Edinburgh,U.K.,25-28 March,1991.
[4]薛定宇,陈阳泉.基于MATLAB/Simulink的系统仿真技术与应用[M].北京:清华大学出版社,2002.
[5]Hendricks E,Sorenson S C.Mean Value
Engine Modeling ofSpark Ignition Engine[C].SAE Paper 900616.
[6]陈绪平,黄海波,黄钰.基于燃油平均值模型的燃气(CNG)发动机模型[J].四川工业学院学报,2004,增刊169(4):169~172.
[7]张翠平,杨庆佛,韩以仑.汽油机怠速稳定性的模糊控制的仿真研究[J].内燃机工程,2003,24(4):38~41.
[8]陈万忠,张振东,钱耀义,李丹,姚喜贵.汽油机怠速模糊控制的研究[J].农业机械学报,1998,29(2):116~120.
[9]K.Tanaka,M.Sugeno.Stability Analysis and
Design of FuzzyControl Systems[J].Fuzzy Sets and Systems,1992,45(2):135~139.
[10]ZABEH L A.Fuzzy sets[J].Information and
Control,1965,(8):330~353.
[11]Wu Z Q,Mizumoto M.PID Type Fuzzy
Controller and parame-ters Adaptive Method[J].Fuzzy Sets and
Systems,1996,78(1):23~35.
[12]刘金琨.先进PID控制及其MATLAB仿真[M].北京:电子工业出版社,2003:68~80.
|
