并联式混合动力汽车转矩实时分配控制策略研究  

A Parallel Hybrid Vehicle Torque Real-time Distribution Control Strategy

作　　者：吴静波 李明明 郭志军 卢耀真 WU Jingbo;LI Mingming;GUO Zhijun;LU Yaozhen(Key Laboratory for Automotive Energy Saving and New Energy in Henan Province,Luoyang 471000,He′nan,China;School of Vehicle and Transportation Engineering,Henan University of Science and Technology,Luoyang 471000,He′nan,China)

机构地区：[1]河南省汽车节能与新能源重点实验室,河南洛阳471000 [2]河南科技大学车辆与交通工程学院,河南洛阳471000

出　　处：《机械科学与技术》2022年第1期151-158,共8页Mechanical Science and Technology for Aerospace Engineering

基　　金：河南省科技攻关项目基金(182102210046)。

摘　　要：为提高并联式混合动力汽车的整体效率,确保发动机工作在高效区的同时,动力电池不会因过度放电对使用寿命造成损害,对并联式混合动力汽车转矩实时分配控制策略展开研究。以全球轻型车测试规程(WLTP)为循环工况,采用马尔科夫链模型预测车辆在未来时域内的需求转矩,以未来时域内电机目标转矩占总需求转矩的百分比和电池SOC值作为输入,以转矩分配因子作为输出,建立模糊控制器,利用自适应模拟退火算法对模糊控制器的输出值进行离线优化,通过动态调节优化后的转矩分配因子实现需求转矩的合理分配,确保电池SOC值波动在设定的上下限内。在MATLAB和Cruise仿真平台中,对本文提出的控制策略进行联合仿真,并与逻辑门限值控制策略进行对比分析,结果表明:相比于逻辑门限值控制策略,转矩实时分配控制策略不仅保证发动机在高效区工作,而且电池SOC值的波动范围也保持在与初始值上下的3%以内,有效的改善了动力电池的使用寿命。In order to improve the overall efficiency of a parallel hybrid vehicle and to ensure that its engine works in the efficient zone so that the power battery will not cause excessive discharge damage to its service life,the parallel hybrid vehicle torque real-time distribution control strategy is studied.With the global light vehicle test procedure as cycle condition,the Markov chain model is used to predict the demand torque of the hybrid vehicle in the future time domain.Wiwh the percentage of the total demand torque to motor target torque and the battery SOC value in the future time domain as input and the torque distribution factor as output,the fuzzy controller is established,the output value of the fuzzy controller is optimized offline with the adaptive analog annealing algorithm,and the torque demand of the fuzzy controller is optimized through dynamical optimization to ensure that the battery SOC value fluctuates within the set upper and lower limits.With the MATLAB and the Cruise simulation platform,the simulation and comparison with the logic threshold control strategy show that the torque real-time distribution control strategy not only ensures that the engine operates in the efficient zone but also keeps the fluctuation range of the battery SOC value within 3%of the initial value,effectively improving the life of the power battery.

关 键 词：混合动力汽车 转矩分配因子 马尔科夫链模型 动态调节 

分 类 号：U469.72[机械工程—车辆工程]