Hübner, M.; Schnieder, E.; Becker, U.:
Safe Tracking of Vehicle-Trailer Combinations by means of Sliding Control.
IFAC - AAC 2010 - Advances in Automotive Control , München, Juli 2010.
Abstract: This paper reports the basic properties and robust control of a vehicle-trailer
combination under crosswind disturbance conditions. In practice it is known that unstable
roll movements may occur, especially with unfavorable combinations of vehicle and trailer
conditions, operating slightly above the permissible maximum speed. This may lead to accidents
mostly due to improper driver behavior.
First we present two dynamic model vehicle-trailer combinations (single- and double track),
using a wind model based on the Dryden spectrum. After analysis of these the single-track model
is used for designing a sliding mode controller. The controller’s parameters are found through
linear optimization, minimizing steering activity and lateral deviation. Finally the controller is
validated using the double-track model of the system.
Simulations show that the controlled system is able to follow a predefined trajectory, which is
generated using an inverted single-track model of the system. The system could also reliably
stabilize roll movements induced by crosswinds. The controller proved to be very robust towards
parameter variations (e.g. loading conditions or vehicle velocity) as well as towards the influence
of crosswind with wind speeds up to 50 m/s.
Keywords: vehicle dynamics, trailer stabilization, driver assistance systems, sliding control