Eco-compatibility aims at drastic changes of people transportation means and, to grant proper mobility levels, the electrically-powered city-car concept provides effective solutions. This quite obviously leads to distributed actuation, with separately driven wheels and inconsistencies appear unless redundancy and tyre/road interaction are properly mastered. The paper deals with the dynamics of such kind of vehicle moving from the behaviour of driven wheels (with compliant tyre and varying soil interactions); then a twin powered axle or train are investigated, as basic reference to describe the dynamics of a four wheels platform, driven by redundant actuation on varying friction soils. On these premises, a city car manoeuvre stability can be stated for low speed tasks over urban roads. Results are obtained, after modelling the wheel dynamics, with resort to computer simulation, based on the SIMULINK package; the kinematics constraints are introduced and the varying tyre-soil coupling conditions are relate d with the driving torque options.
The Tyre-Soil Effects on the Manoeuvrability of a City-Car / Michelini, R. C.; Molfino, R. M.; Ghigliazza, R.; Callegari, Massimo. - STAMPA. - 1:(2001), pp. 428-433. (Intervento presentato al convegno IEEE/ASME International Conference on Advanced Intelligent Mechatronics: AIM '01 tenutosi a Como, Italy nel July 8-11, 2001) [10.1109/AIM.2001.936492].
The Tyre-Soil Effects on the Manoeuvrability of a City-Car
CALLEGARI, Massimo
2001-01-01
Abstract
Eco-compatibility aims at drastic changes of people transportation means and, to grant proper mobility levels, the electrically-powered city-car concept provides effective solutions. This quite obviously leads to distributed actuation, with separately driven wheels and inconsistencies appear unless redundancy and tyre/road interaction are properly mastered. The paper deals with the dynamics of such kind of vehicle moving from the behaviour of driven wheels (with compliant tyre and varying soil interactions); then a twin powered axle or train are investigated, as basic reference to describe the dynamics of a four wheels platform, driven by redundant actuation on varying friction soils. On these premises, a city car manoeuvre stability can be stated for low speed tasks over urban roads. Results are obtained, after modelling the wheel dynamics, with resort to computer simulation, based on the SIMULINK package; the kinematics constraints are introduced and the varying tyre-soil coupling conditions are relate d with the driving torque options.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
