Comparative Analysis of Passive and Active Anti-Roll Bar Strategies for Vehicle Roll Stability

Abstract

Vehicle roll stability is critical for safety and handling performance, especially during high-speed cornering and transient lateral disturbances. This study conducts a comparative analysis of anti-roll bar (ARB) configurations, including a passive ARB and active ARB strategies that enhance roll stability by applying controlled torque to mitigate body roll. A yaw-roll vehicle dynamics model, structured as a three-body system, is employed to evaluate lateral, yaw, and roll motions. The passive ARB serves as the baseline, while active ARB configurations introduce controlled torque generated in response to lateral acceleration and roll disturbances, targeting reductions in roll angle and roll rate.The analysis employs time-domain simulations in MATLAB/Simulink to assess the influence of different ARB configurations on vehicle stability and handling under varied driving conditions. By evaluating multiple active control strategies, this study advances the understanding of roll control systems and their potential to improve vehicle dynamics. The results establish a foundation for further exploration of model-based roll control approaches and their integration into future suspension technologies.