Browsing by Author "Papageorgiou, Georgios"
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Item Open Access Extremum seeking control for truck drag reduction(2018-11-01) Papageorgiou, Georgios; Barden, Jason; Whidborne, James F.; Garry, Kevin P.The aerodynamic drag on a heavy truck tractor and semi-trailer combination can be reduced by means of a wind deflector installed on the roof of the tractor cab. The drag reduction is dependent upon the height and shape of the deflector. A variable height deflector has been constructed and tested in a wind-tunnel and on-road. In this paper, an extremum-seeking control scheme is proposed to adjust on-line the deflector height to minimize the aerodynamic drag. The effectiveness of the scheme is evaluated by simulation and its practicality is evaluated.