Global and local suspensions controls applied to vehicle braking on rough roads

Modem vehicles are more and more equipped with electronic control systems. Among these systems, suspensions have been a large field of study. Whether the suspension system is active, semi-active or passive, it must filter the road vibrations without neglecting vehicle ride performance. In this paper, it is shown through different strategies how such goals can be contradictory, especially when dealing with several difficulties such as braking on a rough road. Then, a new strategy including a Global Suspensions Control and a Local Suspensions Control is presented.