双离合器自动变速器建模与起步仿真分析  

Driveline system modeling and starting control strategy of DCT

作　　者：赵志强[1] 周云山[1] 曹成龙[1] 

机构地区：[1]湖南大学汽车车身先进设计制造国家重点实验室,长沙410082

出　　处：《现代制造工程》2009年第7期120-124,共5页Modern Manufacturing Engineering

摘　　要：双离合器自动变速器(Dual Clutch Transmission,DCT)以其独特的双离合器、双输入轴结构特点,克服了电控机械式自动变速器换挡过程中动力中断的缺点,这对电控机械式自动变速器来说,是一个很大的进步。介绍DCT的工作原理,提出DCT起步时采用两个离合器同时起步并根据起步条件确定离合器的分离阈值的1挡或2挡起步控制策略,以实现轻、中载条件下的快速起步(2挡起步)和重载条件下的正常起步(1挡起步),并通过离合器的分离速度控制来保证起步过程的平顺性。通过对湿式双离合器自动变速器的起步过程仿真分析,结果表明该控制策略能够实现DCT起步的平顺性和快速性的要求。With unique configuration characteristic of dual clutch and dual input shaft, Dual Clutch Transmission （DCT） overcomes the shortcoming of power interruption when shifting in traditional Automatic Manual Transmission（AMT） ,which is a great progress of AMT. Through analyzing the operation principle of DCT,the starting control strategy is put forward that 1st and 2nd gear are both applied in the process of vehicle starting simultaneously and the apart threshold of clutch is estimated based on the starting conditions. And set up the simulation model for the starting process. The results dedicate that the control strategy is able to accomplish the requirement for smooth starting and rapid starting.

关 键 词：双离合器 电控机械式自动变速器 起步控制 仿真 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]