AN INTEGRATED ROLLOVER MITIGATION STRATEGY FOR MILITARY TRUCKS

Military vehicles in the field are often required to perform severe emergency maneuvers to avoid obstacles and/or escape enemy fire. This paper proposes a combined direct yaw control (DYC) and emergency roll control (ERC) system to mitigate rollover in the studied military vehicle. The DYC uses a differential braking strategy to stabilize the vehicle yaw moment and is intended to reduce the risk of untripped rollovers and also help prevent the vehicle from skidding out, thus allowing the driver to maintain control of the vehicle. The ERC uses actuators located near the vehicle suspension to apply an upward force to the vehicle body to counter the roll angle. An off-road tire model was used with the overall vehicle model in commercially available vehicle simulation software to simulate emergency maneuvers on various driving surfaces. Simulation results show that the proposed control strategy helps prevent both tripped and untripped rollovers on various driving surfaces.