Identification of tyre characteristics using active force excitation

Albinsson, Anton,1989Chalmers tekniska högskola,Chalmers University of Technology (författare)

QC 20161110
Knowledge of the maximum tyre-road friction coefficient can improve active safety systems by defining actuator boundaries and adaptable intervention thresholds. Estimation of the coefficient of friction based on tyre response measurements requires large level of force excitation. Under normal driving conditions, manoeuvres with large tyre utilizations are rare. This study investigates a method where wheel torques with opposite signs are applied to the front and rear axle simultaneously. This procedure allows for an intervention with large tyre excitations without disturbing the motion of the vehicle. The intervention is evaluated in simulations and experiments. Further, a method is proposed which does not require measurement of the vehicle longitudinal velocity. The results show that it is possible to estimate the current friction coefficient with the proposed method, although the assumption made in the proposed method makes the friction estimate sensitive to measurement noise on the wheel speed signal.

Bruzelius, Fredrik,1974Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)bruze (författare)
Jacobson, Bengt J H,1962Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)bengtja (författare)
Gustafsson, T.Qamcom Research And Technology AB (författare)
Jonasson, MatsKTH,Farkost och flyg,Volvo Cars, Sweden(Swepub:cth)matjona (författare)
Chalmers tekniska högskolaQamcom Research And Technology AB (creator_code:org_t)

Ingår i:The Dynamics of Vehicles on Roads and Tracks - Proceedings of the 24th Symposium of the International Association for Vehicle System Dynamics, IAVSD 2015: CRC Press, s. 501-5109781138028852

Av författaren/redakt...: Albinsson, Anton ...; Bruzelius, Fredr ...; Jacobson, Bengt ...; Gustafsson, T.; Jonasson, Mats

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