Many studies are currently being developed on mechatronic systems aiming at the enhancement of vehicles' safety and performances (steer-by-wire, brake-by-wire, drive-by-wire); their success is based on an integrated design of car's mechanics and control systems and therefore proper dynamic modelling tools are strongly needed, so as to allow virtual prototyping by means of computer simulation. The present paper describes the dynamic modelling of a city-car currently under study by Tonino Lamborghini G.C. spa. The Carrozzeria Suzzarese explains the proposal of an innovative drive-by-wire control system that should allow good dynamic performances through a sidestick command interface. To that aim, a seven dof's model has been developed so that directional behaviour and vehicle's stability can be studied, neglecting the compliance of suspension system due to the limited performances that are requested to the city-car; in any case, the model has been written in a general way so that, under the same simplifying hypotheses, also 4WD and/or 4WS vehicles can be treated, for which cases much research is currently being developed. The control system has been designed with the goal to enhance vehicle handling by taking profit of the independent wheels actuation and the steer-by-wire driving: in the present paper the whole hierarchic architecture of the controller is described together with the organisation of the single modules. Then the whole dynamic model has been implemented by means of MATLAB/SIMULINK and vehicle's performances have been assessed (by computer simulation) in case it is equipped with different control systems (according to available sensory systems or requested performances); a comparison with the results provided by other multibody modelling tools has been carried on for some specific test cases.
Dynamic Modelling of an Electric City-Car and Proposal of an Integrated Drive-By-Wire Controller (Modellazione dinamica di una city-car elettrica e proposta del sistema di controllo per un azionamento drive-by-wire) / Rattighieri, G.; Gucciardi, F.; Callegari, Massimo. - ELETTRONICO. - (2001). (Intervento presentato al convegno HTCES01, 7th International Conference “High-Tech Cars And Engines” tenutosi a DEMOCENTER, Modena (I) nel May 31st-June 1st, 2001.).
Dynamic Modelling of an Electric City-Car and Proposal of an Integrated Drive-By-Wire Controller (Modellazione dinamica di una city-car elettrica e proposta del sistema di controllo per un azionamento drive-by-wire)
CALLEGARI, Massimo
2001-01-01
Abstract
Many studies are currently being developed on mechatronic systems aiming at the enhancement of vehicles' safety and performances (steer-by-wire, brake-by-wire, drive-by-wire); their success is based on an integrated design of car's mechanics and control systems and therefore proper dynamic modelling tools are strongly needed, so as to allow virtual prototyping by means of computer simulation. The present paper describes the dynamic modelling of a city-car currently under study by Tonino Lamborghini G.C. spa. The Carrozzeria Suzzarese explains the proposal of an innovative drive-by-wire control system that should allow good dynamic performances through a sidestick command interface. To that aim, a seven dof's model has been developed so that directional behaviour and vehicle's stability can be studied, neglecting the compliance of suspension system due to the limited performances that are requested to the city-car; in any case, the model has been written in a general way so that, under the same simplifying hypotheses, also 4WD and/or 4WS vehicles can be treated, for which cases much research is currently being developed. The control system has been designed with the goal to enhance vehicle handling by taking profit of the independent wheels actuation and the steer-by-wire driving: in the present paper the whole hierarchic architecture of the controller is described together with the organisation of the single modules. Then the whole dynamic model has been implemented by means of MATLAB/SIMULINK and vehicle's performances have been assessed (by computer simulation) in case it is equipped with different control systems (according to available sensory systems or requested performances); a comparison with the results provided by other multibody modelling tools has been carried on for some specific test cases.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
