ADRC based clutch slip control for automatic transmission

In this paper, an active disturbance rejection controller (ADRC) is proposed for the gear shift operation of automatic transmissions. With this approach, model uncertainties including steady state errors, unmodelled dynamics and disturbances which are known or unknown are treated as a total disturbance. The total disturbance can be estimated using the extended state observer (ESO), and a nonlinear state error feedback controller is designed to make the clutch speed difference tracking the desired reference. Finally, the designed controller is tested on an AMESim power-train simulation model. Simulation results are provided to demonstrate the effectiveness of the proposed control scheme.