Shift control of Dual Clutch Transmission using Triple-Step nonlinear method

Abstract The shift control, especially clutch slip control in inertia phase, is considered as a key issue of dual clutch transmission for improving driving comfort. For the shift is a complex nonlinear dynamic process combining engine states and road information, and these are often variable, so the clutch control system can be described as a nonlinear parameter-varying model. Moreover, a novel nonlinear approach is proposed for clutch control of shift process, the control objective is to obtain smooth gearshift in the limited shift time by making clutch slipping speed difference tracking the planned reference. The proposed method can be formalized as a triple-step procedure and this procedure provides a concise design process so that the derivation of the control law is simplified and straightforward. Finally, the simulation results in the environment of AMESim with a complete vehicle model show the efficiency of the proposed approach.