Shift Control for Two-Speed Dry Dual-Clutch Transmission of Pure Electric Vehicles 2022-01-7044

In order to achieve a good shifting quality of pure electric vehicle dual-clutch transmission, this paper adopts linear active disturbance rejection controller (LADRC) to control the shifting strategy. For the uncertainty of transmission dynamics model parameters and the existence of unknown disturbance effects, the linear expansion state observer (LESO) can be used to estimate and compensate the disturbance. The shift control process is converted into tracking the motor speed and clutch speed trajectory, and the linear feedback control law is used to control the motor torque and the solenoid valve current. The simulation and test results show that the control algorithm is effective and good shifting quality is guaranteed.