Abstract
This paper presents a sliding mode controller for electronically controlled automotive transmissions. During the shift, each multiple-disc clutch or band brake in the transmission must be controlled properly with a hydraulic actuator to avoid torque fluctuations in a transaxle output shaft. However the dynamics of the actuator varies largely with the oil temperature. It is shown through numerical simulations and experiment that the proposed controller enables highly robust performance against the model uncertainties of the hydraulic actuator
