Control of gearshifts on dual-clutch transmissions during the inertia phase

In order to improve shift quality of vehicles equipped with a DCT, using backstepping technique, a nonlinear controller is designed here for gearshifts during the inertia phase. Closed-loop control of clutch slip is carried out during the controller design. Furthermore, complex nonlinear characteristics from engine systems are represented by lookup tables. And these tables with their original form will be used in the proposed nonlinear controller. In the end, shift processes are simulated by the AMESim powertrain simulation model under various operation conditions to test the effectiveness of the designed controller.