Pitch Control for Semi-Active Suspensions: Open-loop and Closed-loop Strategies

Semi-Active suspensions can modulate the damping coefficient of the vehicle in real-time, outperforming passive systems in stability and comfort. In literature, many contributions investigate the damping of the vertical dynamics whereas the pitch motion is often disregarded. In this article, the authors present two strategies, open-loop and closed-loop, to directly tackle the pitch dynamics. Both strategies are validated experimentally on an actual vehicle in a test road which particularly excite the pitch resonance of the chassis, demonstrating how the vehicle balance, and thus the riding performance, can be drastically improved.