机电式CVT混合动力系统工况过渡控制  

Work Condition Switch Control of Hybrid Electric System Equipped with Electric-mechanic Continuously Variable Transmission

作　　者：叶明[1,2] 李鑫[1] 程越[1] 

机构地区：[1]重庆理工大学汽车零部件先进制造技术教育部重点实验室,重庆400054 [2]力帆实业(集团)股份有限公司,重庆401122

出　　处：《机械传动》2014年第6期5-9,13,共6页Journal of Mechanical Transmission

基　　金：国家自然科学基金面上项目(51275549);重庆市自然科学基金(cstc2012jjA60003);重庆市博士后特别资助项目(XM20120005)

摘　　要：针对搭载机电式无级自动变速(Electric-mechanic continuously variable transmission,EMCVT)混合动力传动系统结构,采用枚举法分析了系统工作模式,将系统模式切换过渡工况归纳为发动机介入传动系统和退出传动系统两种情况。分别制定了两种情况下的控制逻辑和各阶段的控制目标,提出了发动机、电机、EMCVT和离合器综合协调控制的过渡工况控制策略。根据系统结构,建立了各关键部件的动力学模型,在MATLAB/SIMULINK仿真平台上,搭建了系统过渡工况控制仿真模型,分别针对发动机介入传动系统和退出传动系统两种情况进行了仿真。仿真结果表明,采用所提出的控制策略能大大降低系统冲击,提高模式切换品质,为机电控制CVT的应用提供理论参考。Based on the configuration of hybrid electric system equipped with electric--mechanic continuously variable transmission （EMCVT） system work condition is enumerated. Work condition switching is divided into two situations： the one is engine engages with driveline and the other is engine disengages with driveiine. Control logics and targets are drawn and control strategy for condition switching integrated with engine, motor, CVT and clutch are put forward. According to system con- figuration dynamic mode of hybrid system is built up. Simulation model with MATLAB/SIMULINK is designed and dynamic performances are simulated for engine engage and disengage driveline. The simu- lation results show that the condition shift quality is highly improved by using control strategies.

关 键 词：机电式无级自动变速 混合动力 工况过渡 控制 

分 类 号：U469.7[机械工程—车辆工程]