摘要
为进一步提高汽车底盘混合动力电驱动系统的动力性与燃油经济性,设计了其控制策略并进行动力系统优化。对汽车底盘的混合动力电驱动系统进行数学模型描述与分析,采用多阈值分割方法设计了其控制方案,在MATLAB/Simulink仿真软件中建立系统仿真模型,以系统油耗作为优化目标对三个关键阈值进行遗传算法优化。仿真与优化结果表明,所设计的汽车底盘混合动力电驱动系统控制策略可以将系统的整体油耗降低约8.6%,改善了系统性能。
In order to further improve power performance and fuel economy of the hybrid electric driving chassis system, the control strategy was proposed and the power system optimization was carried out. First of all, the hybrid electric drive system of automobile chassis has carried on the description and analysis of mathematical model, and then the control scheme was designed by multiple threshold segmentation method. System simulation model is established in the MATLAB/Simulink simulation software. Three critical thresholds of strategy were optimized by the genetic algorithm with system fuel consumption as an opti- mization goal. The simulation and optimization results show that the design of the hybrid electric car chassis systems control strategy can decrease the total fuel consumption by about 8.6%; the performance of the system is improved.
出处
《中国农机化学报》
2015年第1期219-222,260,共5页
Journal of Chinese Agricultural Mechanization
关键词
混合动力系统
控制方案
优化算法
系统仿真
hybrid system
control scheme
optimization algorithm
system simulation
