TITLE:
Model-Based Approach to Investigate the Influences of Different Load States to the Vehicle Dynamics of Light Electric Vehicles
AUTHORS:
Harry Ott, René Degen, Mats Leijon, Margot Ruschitzka
KEYWORDS:
Vehicle Dynamics, Multibody System, Tricycle, Rigid Model, Numerical Simulation
JOURNAL NAME:
Journal of Transportation Technologies,
Vol.11 No.2,
April
6,
2021
ABSTRACT: The need to find alternative urban mobility solutions for delivery and
transport has led mobility companies to devote enormous resources for
research-based solutions to increase vehicle safety. This paper documents a
virtual approach to investigate the influences of different load states to the
vehicle dynamic of light electric vehicle. A model basing on a
three-dimensional multibody system was used, which consists of five
bodies. By applying methods of multibody modelling the generalized equations of
motion were generated. To include the
behavior within the contact point between road and vehicle a simplified
tire models was added. The implementation of the equations allowed a first
validation of the model via simulations. In a final modeling step the
simulation results were interpreted in respect of plausibility. Afterwards, the
model was simulated numerically to investigate different load states of the
vehicle, by applying constant steering stimuli and variable velocities. In sum,
the investigated model approach is useful to identify safety relevant
parameters and shows the effects of load states to the vehicle dynamics.
Furthermore, it behaves plausibly regarding general vehicle dynamics. These
results prove the general usability of the
model for the development controllers and estimators in driver
assistances systems.