Design and Simulation of active anti-rollovers control system for heavy trucks
2022-01-1105
03/29/2022
- Event
- Content
- With the rapid development of the logistics and transportation industry, heavy-duty trucks play an increasingly important role in social life. However, due to the characteristics of large cargo loads, high centroid and relatively narrow wheelbase, the driving stability of heavy trucks are poor, and it is easy to cause rollaway and accidents under high-speed driving conditions, large steering and emergency obstacle avoidance. To improve the roll stability of heavy trucks, it is necessary to design an active anti-rollover control system, through the analysis of the yaw rate and the load transfer rate of the vehicle tires, driving states can be estimated during the driving process. Under the intervention of the control system, the lateral transfer rate of heavy trucks can be reduced to correct the driving posture of the vehicle body and reduce the possibility of rollover accidents. At present, anti-rollover control systems mainly include semi/active suspension, active steering, and differential systems. However, in actual vehicle instability conditions, a single active anti-rollover control system is often difficult to ensure the safety of the vehicle. It also affects the driver's driving intention and occupant's riding comfort, so the joint coordinated control of multiple systems is required. This paper takes the active steering and differential control system as an example. The two subsystems of active steering and direct yaw moment control are coordinated and controlled through a hierarchical method, and The controls system are jointly simulated based on the Simulink/Trucksim platform. The results show that the designed active anti-rollover control system can significantly reduce the vehicle's yaw rate and lateral acceleration to improve the vehicle's anti-rollover stability.
- Citation
- Zeng, Q., "Design and Simulation of active anti-rollovers control system for heavy trucks," SAE Technical Paper 2022-01-1105, 2022, .