Paper Number 2.1
A Modified
Dugoff Tire Model for Combined-Slip Forces
Nenggen Ding[1]
Dept. of Automobile
Engineering
Email:
Center for Vehicle Systems
and Safety (CVeSS)
Virginia Polytechnic Institute
and
Email: staheri@vt.edu
Easy-to-use tire
models for vehicle dynamics have been persistently studied for such
applications as control design and model-based on-line estimation. This article
proposes a combined-slip tire model based on Dugoff-tire. The proposed model
takes emphasis on less time consumption for calculation and uses a minimum set
of parameters to express tire forces. Revision for Dugoff-tire model is made on
two aspects: one is taking different tire/road friction coefficients for
different magnitudes of slip and the other is employing the concept of friction
ellipse. The proposed model is evaluated by comparison with the LuGre tire
model. Although there are some discrepancies between the two models, the
proposed combined-slip model is generally acceptable due to its simplicity and
easiness to use.