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Nonlinear Observer Design For Lateral Vehicle Dynamics

Authors:von Vietinghoff Anne, Universität Karlsruhe (TH), Germany
Hiemer Marcus, Universität Karlsruhe (TH), Germany
Kiencke Uwe, Universität Karlsruhe (TH), Germany
Topic:1.1 Modelling, Identification & Signal Processing
Session:Nonlinear Filtering
Keywords: Automotive control, nonlinear models, state estimation, state observers, vehicle dynamics

Abstract

The vehicle sideslip angle (VSSA) is determined using anonlinear observer with Adaption of a Quality Function. The observerdesign is based on an adapted nonlinear double track model. Byvalidation with real measurement data, the model accuracy is provento be sufficient for observer design. The observer is derived andvalidated with real measurement data of representative test drives.It is shown that the observer is capable to determine the VSSA withhigh accuracy up to the stability limit of the vehicle.