RESEARCH OF VEHICLE STABILITY ON CIRCULAR MOUNTAIN ROAD BASED ON RECONSTRUCTION OF ROAD ALIGNMENT PARAMETERS

摘要

Aiming at the driving stability of the vehicles around the mountain at different speeds, a horizontal and vertical linear reconstruction algorithm of the vehicle trajectory is constructed. The motion conditions of the vehicle in the horizontal and longitudinal combined sections are analysed. The vehicle rollover prediction model, the side slip prediction model and the downhill driving steering stability prediction model are proposed. Also, the vehicle driving stability detection system is developed independently. The experiment results show that after inputting the vehicle parameters and setting the driving speed, the driving stability of the current road section can be predicted, and the critical speed and the unstable road section of the side slip, rollover and downhill steering instability can be obtained. As a result, the critical speed for safe operation in all sections can be got. The research results not only provide the theoretical basis for speed limitation and improvement of current road design, but also provide valuable decision-making reference for driving safety control of connected vehicles.