干式双离合器自动变速器升档综合控制与仿真分析

Upshifting Integrated Control and Simulation of Dry Dual Clutch Transmission

建立了干式双离合器自动变速器(DCT)升档过程系统动力学模型。针对干式双离合器系统的非线性、难以建立精确数学模型等特点,设计了模糊控制器。分析了双离合器升档控制过程;制定了干式双离合器升档过程控制策略;通过综合控制发动机和离合器压力来完成换档过程中的动力切换。基于Matlab/Simulink软件平台,建立了干式DCT传动系统的仿真模型,对升档过程进行了仿真分析;同时为了体现文中控制器的优越性进行了对比仿真。结果表明,该控制方法能满足DCT升档过程的要求,控制器的跟踪性能良好,且明显优于常规PID控制器。

The dynamic model of.the upshifi process of dry dual clutch transmission is constituted, aiming at attribute of nonlinear and difficult to establish math model of the dry dual clutch transmission（DCT）. A fuzzy controller is designed. Dual - clutch upshift control process is Analysed. Then the control scheme of upshift process is built. With the control scheme, the transfer of engine torque is completed through a combination of a manipulation of engine control and clutch pressure. Dynamic simulation model of dry DCT powertrain is implemented using the Matlab/Simulink software. The control scheme of upshift process is simulated based on this dynamic model. The simulation results show that the control scheme can meet the needs of upshift process of DCT, and the tracking performance of controller is good.