湿式双离合器自动变速器换挡控制与仿真分析  

Shifting control and simulation of wet dual clutch transmission

作　　者：刘振军[1] 郝宏伟[1] 董小洪[1] 刘飞[1] 

机构地区：[1]重庆大学机械传动国家重点实验室,重庆400044

出　　处：《重庆大学学报（自然科学版）》2011年第1期7-14,共8页Journal of Chongqing University

基　　金：国家自然科学基金资助项目(51075412)

摘　　要：建立了湿式双离合器自动变速器(dual clutch transmission,DCT)换挡过程系统动力学模型,针对湿式双离合器系统的高度非线性、难以建立精确数学模型等特点,设计了多规则因子模糊控制器。制定了湿式双离合器换挡过程控制策略,该控制策略通过综合控制发动机和离合器压力来完成换挡过程中的动力切换。基于Matlab/Simulink软件平台,建立了湿式DCT传动系统的仿真模型,对换挡过程进行了仿真。结果表明,该控制策略能够满足DCT换挡过程的要求,并且控制器的跟踪性能良好。最后,讨论了换挡控制的影响因素。The dynamic model of the shift process of wet dual clutch transmission（DCT） is set up.Aiming at the characteristics of wet dual clutch transmission,such as being highly nonlinear and difficult to establish its math model,etc.,a multiple rule weighting factor fuzzy controller is designed.Then the control scheme of shift process is built,which completes the transfer of engine torque through a combination of a manipulation of engine control and clutch pressure.Dynamic simulation model of wet DCT power train is implemented by using Matlab/Simulink software,the control scheme of shift process is simulated based on this dynamic model.The simulation results show that the control scheme can meet the needs of DCT shift process,and the tracking performance of controller is good.Finally,influencing factors of transmission shift control is discussed.

关 键 词：双离合器自动变速器 湿式离合器 模糊控制 换挡控制 综合控制 

分 类 号：U463.5[机械工程—车辆工程]