The present work is aimed to create a Simulink model of an electromechanical anti roll bar actuator. Said actuator is mounted both on front and rear axle of a passenger car in order to enhance its stability and to improve its dynamic performances. Said passenger car has been previously modeled too, in order to be dynamically simulated at the end of the work, once coupled with the actuator’s model here developed. A semi-physical model is chosen to develop the actuator model, because of its accuracy in reproducing the non linearity effects and its ease in being customized, thanks to its parametric nature. Each component of the real actuator is thus analyzed and simulated by a Simulink block that, together with the other, will form a complete model of the actuator. The actuator model is then implemented on the complete vehicle model and tested, performing maneuvers like Quasi Steady State Cornering, Step Steering and Ramp Steering.
Il presente lavoro riguarda la modellazione dell’attuatore elettromeccanico di una barra anti rollio attiva. la barra anti rollio in analisi è montata sull’asse anteriore e posteriore di un’automobile con lo scopo di aumentarne l’agilità, la stabilità e le doti dinamiche. Per quanto riguarda la barra anti rollio si sceglie di utilizzare un modello semi-fisico; la modellazione si basa sul risultato fornito da una prova di hardware-in-the-loop precedentemente svolta. Una volta individuati i parametri necessari all’approssimazione, si procede con l’ottimizzazione del modello semi-fisico ed infine alla sua implementazione nel modello di veicolo completo (modellato precedentemente al presente lavoro). Una volta validato, il veicolo così modellato costituisce l’oggetto di una serie di test di stabilità costituita da manovre imposte al driver virtuale, come per esempio Quasi Steady State Cornering, Step Steering and Ramp Steering.
Modeling of an electromechanical active anti-roll bar
POZZI, PIETRO
2013/2014
Abstract
The present work is aimed to create a Simulink model of an electromechanical anti roll bar actuator. Said actuator is mounted both on front and rear axle of a passenger car in order to enhance its stability and to improve its dynamic performances. Said passenger car has been previously modeled too, in order to be dynamically simulated at the end of the work, once coupled with the actuator’s model here developed. A semi-physical model is chosen to develop the actuator model, because of its accuracy in reproducing the non linearity effects and its ease in being customized, thanks to its parametric nature. Each component of the real actuator is thus analyzed and simulated by a Simulink block that, together with the other, will form a complete model of the actuator. The actuator model is then implemented on the complete vehicle model and tested, performing maneuvers like Quasi Steady State Cornering, Step Steering and Ramp Steering.File | Dimensione | Formato | |
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MODELING OF AN ACTIVE ANTI ROLL BAR.pdf
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https://hdl.handle.net/10589/91985