Title: Active engine control for gearshifting in automated manual transmissions

Authors: Jonas Fredriksson, Bo Egardt

Addresses: Control and Automation Laboratory, Department of Signals and Systems, Chalmers University of Technology, SE-412 96 Goteborg, Sweden. Control and Automation Laboratory, Department of Signals and Systems, Chalmers University of Technology, SE-412 96 Goteborg, Sweden

Abstract: The problem of automating the gerashift process of a manual transmission without synchronisers is considered in this paper. The application is very interesting from an integrated powertrain control point of view, since it includes many different control tasks and encourages the use of modern control theory and the use of the engine as an actuator to the rest of the powertrain. The powertrain controller will have a supervisory function, coordinating the control of the engine and the transmission. The control laws for the gearshifting controller will include transmission torque control and engine speed control. The derived control laws are designed based on backstepping, a nonlinear model-based control design methodology. Simulations have shown good results for the gearshift controller

Keywords: powertrain control; diesel engine control; transmission modelling; gearshifting.

DOI: 10.1504/IJVD.2003.003562

International Journal of Vehicle Design, 2003 Vol.32 No.3/4, pp.216 - 230

Published online: 19 Sep 2003 *

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