双离合器自动变速换挡品质分析与控制  

Analysis and control on shift quality of dual-clutch transmission

作　　者：刘振军[1] 董小洪[1] 秦大同[1] 刘永刚[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）》2010年第5期29-34,共6页Journal of Chongqing University

基　　金：国家高技术研究发展计划(863计划)资助项目(2006AA110111)

摘　　要：干式双离合器自动变速系统中离合器扭矩控制是换挡品质控制的关键,在分析双离合器自动变速器换挡过程的基础上,建立了换挡过程系统动力学模型,分析了双离合器传递扭矩和切换时序对换挡品质的影响;提出了通过执行机构对换挡过程中干式双离合器压紧力进行控制以实现换挡品质控制的方法。针对一款干式双离合器自动变速车辆,建立了换挡过程系统Simulink仿真模型,对换挡控制特性进行了仿真和实验分析。结果表明,所提出的换挡控制策略较好实现了对换挡品质的控制。Torque control is the key to control the shift quality in dual clutch automatic transmission system. Based on the analysis of shift process of DCT, a dynamic model of shifting is built, torque and time switch influence on shift quality are analyzed, and a method in which the pressing force of dual clutch is controlled through actuating mechanism to realize the control of shift quality is put forward. Aiming at one type of vehicle mounted with DCT, a simulation model of shift process is built and simulated, and the experimental analysis of shifting control characters is carried out. The results indicate that the control strategy can control shift quality well.

关 键 词：双离合器自动变速器 干式离合器 换挡控制 仿真分析 试验对比 

分 类 号：TH132.32[机械工程—机械制造及自动化]