混合动力汽车行进间起动发动机与DCT换挡协调控制  

Coordination Control of Engine Starting and DCT Shifting of Hybrid Electric Vehicles While Driving

作　　者：刘永刚[1] 陈亮 秦大同[1] 雷贞贞[1,3] 吴睿[1] 

机构地区：[1]重庆大学机械传动国家重点实验室∥汽车工程学院,重庆400044 [2]上海汽车变速器有限公司,上海201807 [3]重庆科技学院机械与动力工程学院,重庆401331

出　　处：《华南理工大学学报（自然科学版）》2016年第9期123-130,共8页Journal of South China University of Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(51305468);重庆市应用开发计划重大项目(cstc2015yykfc60003);重庆大学中央高校基本科研业务费专项资金资助项目(106112016CDJXY330001)~~

摘　　要：结合双离合器自动变速器(DCT)独特的结构型式和性能优势,提出了一种装备DCT的单电机重度混合动力系统,建立了该重度混合动力系统的动力学模型.采用基于规则的方法,以系统效率最优为目标进行了工作模式区域分析与经济性换挡规律分析,制定了混合动力汽车模式切换与DCT换挡的综合工作规律.针对综合工作规律中模式切换点与换挡点相交的情况,提出了模式切换与换挡协调控制策略以及控制方法,并利用Matlab/Simulink软件仿真平台进行了行进间起动发动机与升挡协调控制过程的仿真分析.结果表明:所建立的行进间起动发动机与升挡协调控制策略有效提升了装备DCT的混合动力系统的性能,不仅解决了装备DCT的混合动力汽车模式切换与换挡冲突的问题,同时较大程度地节省了模式切换与换挡时间,充分发挥了装备双离合器自动变速器的混合动力系统的结构优势.On the basis of the distinctive structure and performance advantages of dual clutch transmission （ DCT）, a single-motor full hybrid electric system equipped with DCT is proposed and its kinetic model is constructed. Then, the rule-based method is adopted to analyze the scope of working mode and the schedule of economical shift by taking the optimal system effiei and DCT shifting is formulated for ching points and shifting points in of mode switching and shifting are shifting coordination control while ency as the objective, and a comprehensive working schedule of mode switching hybrid electric vehicles （HEV）. In view of the intersection between mode swit- the comprehensive working schedule, the coordination control strategy and method proposed. Finally, on the Matlab/Simulink platform, the engine starting and up- driving is analyzed by simulations. The results indicate that the proposed coordi- nation control strategy of engine starting and shifting while driving is effective in improving the performance of the proposed system, specifically, it can avoid the clash between mode switching and shifting with much less mode switching and shifting time, which means that the structure advantage of the proposed system are fully utilized.

关 键 词：混合动力汽车 双离合器自动变速器 模式切换 换挡 控制策略 

分 类 号：U469.72[机械工程—车辆工程]