Abstract
A new vehicle stability control system is presented, which improves handling abilities during critical cornering situations by means of active braking of single wheels. The system is based on controlling the vehicle sideslip angle. The actual dynamic state of the vehicle is described by a non-linear two-track model and an observer. Estimation of the coefficient of friction is included as well. The nominal sideslip angle is determined by a modified linear one-track model. Both, vehicle sideslip angle and its gradient are considered for calculating an additional yaw moment. As a special feature of this application, a prototype of a new electric-hydraulic breaking system, called “Brake by Wire”, was used. Measurements on an experimental car prove the functionality of this automotive control system.
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