Gearshift Controller Design for Automatic Transmission

A gearshift controller for automatic transmission is developed in this paper, which regulates turbine speed to track the desired trajectory and suppresses the output shaft oscillation at the same time by single clutch pressure control. In order to achieve this task, the proposed controller is designed, by integrating backstepping technique and sliding mode output feedback control theory. Simulation of 1–2 upshift is illustrated to verify the validity of the proposed gearshift controller.