In this paper a fuzzy-based controller to improve the roll stability in a single unit heavy vehicle is proposed. The controller, consisting of active anti-roll bars, provides the adequate roll moments to the vehicle to improve its performance. The main advantages of fuzzy method are its simplicity, its good performance to control non-linear systems and it is a free-model control. Simulation results show the effectiveness of the proposed control system during different manoeuvres (J-turn and change line).

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