090503 Gearshift control for dry dual-clutch (090503干式双离合变速控制).pdf
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WSEAS TRANSACTIONS on SYSTEMS Chunsheng Ni, Tongli Lu, Jianwu Zhang
Gearshift control for dry dual-clutch transmissions
Chunsheng Ni, Tongli Lu, Jianwu Zhang
School of Mechanical Engineering
State Key Laboratory for Mechanical System and Vibration
Shanghai Jiao Tong University
800 Dong Chuan Road, Shanghai, 200240
China
chunsheng_ni@sjtu.edu.cn
Abstract: - In this paper a smooth control algorithm for gear shifting is proposed for improving longitudinal
dynamic performance during dry dual-clutch engagements while shifting up or down takes place based on
measurements of engine speed and clutch speed, and on estimation of the dual-clutch engaging torque.
Simulation effort is made by Matlab/Simulink for transient responses of the overall propulsion system with the
dry dual-clutch transmission (DDCT) in consideration of twin clutch engagement rules for gear shifting. As a
numerical example, the present control algorithm is used for the DDCT equipped vehicle to simulate
overlapping shifting behaviors. By the numerical it is shown that the DDCT vehicle possesses of much better
longitudinal dynamic performance in shifting by imposing proper control of engine and the dual-clutch.
Key-Words: - Dry dual-clutch transmission; Engaging force; Smooth control algorithm; Clutch control; Engine
control; Shifting behaviors
1 Introduction engagement forces is accounted for in the control
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