Optimal control of engine controlled gearshift for a diesel-electric powertrain with backlash
Gearshift optimal control of a hybrid powertrain with a lumped/decoupled transmission
model and backlash dynamics in the driveline is studied. A model is used for a heavy
duty powertrain including a validated mean value diesel engine model with electric generator,
transmission dynamics representing the dynamics of the automated manual transmission system
and driveshaft
exibilities. Backlash dynamics are also included in the driveline model by
introducing a switching function. By applying numerical optimal control methods and dividing
the gearshift process into separate phases, optimization problems are solved to investigate the
minimum time and low Jerk gearshift transients. The controls are also calculated with fuel
penalties added to the minimum Jerk optimization and the transients are analyzed.
Vaheed Nezhadali and Lars Eriksson
2016
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