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ANÁLISE DA ESTABILIDADE VEICULAR MEDIANTE CONTROLE DO ÂNGULO DE CAMBER DO SISTEMA DE SUSPENSÃO
André Luis Aguiar Paladini , SP , Brazil
Co-Authors: André Luis Aguiar Paladini, Vitor Franco
Presenter: André Luis Aguiar Paladini
In the quest to optimize dynamic performance and stability in automobiles, several suspension system solutions has been proposed throughout history. The present work aimed to develop a mathematical model that represented vertical displacement and the vehicle chassis roll based on an active suspension system with control of the camber angle variation referring to one of the wheels. In this way, a nonlinear model of four degrees of freedom of ½ vehicle was developed, featuring the variable stiffness in one of the tires, due to the variation in the camber angle and, consequently, the decrease in the tread contact width. For this purpose, a Double Wishbone suspension geometry (modeled as a four-bar mechanism) was considered, whose upper arm varied its length in an active way, allowing the control of the camber angle, given the vertical displacement of the suspension. The model was developed on Simulink®, taking into account a PID controller, obtaining as a result an attenuation of vibrations, in terms of vertical displacement and vehicle chassis roll, increasing the stability and comfort of the vehicle during driving.
Vehicular Stability, Active suspension, Suspension Geometry, Dynamic model, Camber Control