Abstract: Shift control is an important aspect of study for Double Clutch Transmission (DCT). Based on the establishment of a driveline model of vehicle mounted with DCT, the change of output torque and speed characteristics of engine and double clutch were analyzed during shift process. Aiming at the shortcomings of the openloop control during shift process, a control method of clutch pressure and the control strategy that engine speed/torque control were combined during shift process were put forward. A simulation model of shift process for vehicle mounted with DCT was established, and its shift characteristics was simulated and analyzed. The simulation results indicate that shift is performed without excessive oscillations of shaft torque and the control strategy can control shift quality well.

Key words: vehicle engineering, Double Clutch Transmission (DCT), shift control, control strategy, simulation analysis

摘要： 换挡控制是研究双离合器自动变速器（DCT）的一个重要方面，在建立DCT车辆传动系统动力学模型基础上，分析换挡过程输出轴转矩变化、发动机和双离合器的转速特性；针对换挡过程开环控制方法的不足，提出了离合器的压力控制方法，及联合发动机转速/转矩控制的DCT车辆换挡过程离合器接合控制策略；建立了DCT车辆换挡过程Simulink仿真模型，对其换挡特性进行仿真分析。仿真结果表明：在换挡过程中，输出轴转矩没有过多的波动，能够改善DCT车辆换挡品质。

关键词: 车辆工程, 双离合器自动变速器, 换挡控制, 控制策略, 仿真分析