基于遗传算法的柴油机喷油系统模型参数辨识

李汝宁; 何勇灵

基于遗传算法的柴油机喷油系统模型参数辨识

北京航空航天大学交通科学与工程学院, 北京 100191

详细信息

中图分类号: TK 421⁺.4
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出版历程
- 收稿日期: 2011-01-10
- 网络出版日期: 2012-04-30

Parameter identification of diesel fuel injection system model using genetic algorithms

School of Transportation Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 柴油机喷油系统中压力的变化会引起气泡的产生和溃灭,而气泡的变化会对燃油的流动和压力波的传播产生影响.为了更准确预测喷油系统中的初始含气率以及变化情况,提出了应用改进遗传算法对柴油机喷油系统模型中的柱塞腔、出油阀紧帽腔、高压油管和针阀腔初始含气率进行辨识的新方法.基于气泡模型,建立了气-液两相条件下的柴油机喷油系统模型,通过仿真数据和试验数据对比,构造了适应度函数,实现了对柴油机喷油系统模型的参数辨识,并得到了参数优化后的柴油机喷油系统模型.仿真结果与试验数据的比较验证了采用改进遗传算法对气-液两相条件下的柴油机喷油系统模型进行参数辨识的可行性.
- 柴油机 /
- 喷油系统 /
- 气泡模型 /
- 遗传算法 /
- 参数辨识
Abstract: The changing of pressure in the diesel injection system results in the growth and collapse of gas bubbles, which affects the diesel flowing and pressure. In order to predict the initial void fraction and changes in the diesel injection system, the method using improved genetic algorithms in parameter identification for the model of diesel injection system was presented, including the initial void fraction of plunger chamber, delivery valve chamber, high-pressure oil pipe and needle valve chamber. The model of diesel injection system under the condition of gas-liquid was established based on the gas model, fitness function was built by comparing with the simulation results and the experimental data, so the parameter optimization of the model of diesel injection system was realized, and the model of diesel injection system of parameter identification was carried out. Comparisons between simulation results and experimental data show that the improved genetic algorithms are capable of estimating unknown parameters in the model of diesel injection system.
- diesel engine /
- fuel injection system /
- gas bubble /
- genetic algorithms /
- parameter identification

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参考文献(10)

[1]	李旭林,何勇灵.两相条件下柴油机喷油系统的数学模型[J].内燃机学报,2007,25(5):428-432 Li Xulin,He Yongling.A model for diesel injection system simulation under two-phase condition[J].Transactions of CSICE,2007,25(5):428-432 (in Chinese)
[2]	何勇灵,刘建民,李民,等.农用柴油机喷油系统中液-气两相流动过程实验研究[J].农业工程学报,2000,16(1):31-34 He Yongling,liu Jianxin,li Min,et al.An experiment investigation on process of two-phase flow in fuel injection system of agricultural diesel engine[J].Transactions of the CSAE,2000,16(1):31-34(in Chinese)
[3]	何勇灵,李汝宁.气泡模型在喷油系统模型仿真中的应用[J].农业工程学报,2011,27(3):142-146 He Yongling,Li Runing.Application of gas bubble model to fuel injection system simulation[J].Transactions of the CSAE,2011,27(3):142-146(in Chinese)
[4]	毛范海.AD型喷油泵燃油喷射系统计算机建模和仿真分析研究[D].大连:大连理工大学机械工程学院,2003 Mao Fanhai.Modeling and simulation on fuel injection system of AD type pump by computer[D].Dalian:School of Mechannical Engineering,Dalian University of Technology,2003(in Chinese)
[5]	Shu Jianjun.A finite element model and electronic analogue of pipeline pressure transients with frequency dependent friction [J].Transactions of ASME,2003,25(1):194-198
[6]	蒋丹.存在气泡和气穴时无阀微泵动态特性研究[D].哈尔滨:哈尔滨工业大学机电学院,2009 Jiang Dan.Study on dynamic characteristics of a valve-less micropump accompanying gas bubbles and cavitation[D].Harbin:School of Mechatronics Engineering,Harbin Institute of Technology,2009 (in Chinese)
[7]	李松晶,鲍文.采用MATLAB Simulink的液压管路瞬态压力脉动分析[J].工程力学,2006,23(9):184-188 Li Songjing,Bao Wen.Analysis of transient hydraulic pressure pulsation in pipelines using MATLAB Simulink [J].Engineering Mechanics,2006,23(9):184-188(in Chinese)
[8]	Li Songjing,Yang Chifu,Jiang Dan.Modeling of hydraulic pipeline transients accompanied with cavitation and gas bubbles using parallel genetic algorithms[J].Journal of Applied Mechanics,2008,75(4):0410121-0410128
[9]	Jensen M J.Numerical simulations of interface dynamics in microfluidics[D].Copenhagen:Department of Micro and Nanotechnology,Technical University of Denmark,2005
[10]	王小平,曹立明.遗传算法-理论、应用与软件实现[M].西安:西安交通大学出版社,2002:19-49 Wang Xiaoping,Cao Liming.Genetic algorithm-theory,application and implementation of software[M].Xi-an:Xi-an Jiaotong University Press,2002:19-49(in Chinese)