Anti-Rollover Warning Control of Dump Truck Lifting Operation Based on Active Suspension

Abstract

The flexible parts of the dump truck such as the suspension, tires and cargo box can affect the roll stability of the vehicle during the lifting process. In order to improve the adverse effects of these flexible parts on the roll stability of the dump truck during lifting, and to prevent the vehicle from rolling over, this paper proposes an anti-rollover warning control method based on active suspension. The nonlinear model of the lift and roll of the dump truck is established by considering the influence of elastic deformation of the tire, suspension, and torsional deformation of the cargo box on the roll of the vehicle, and dynamic characteristics of the nonlinear model are verified in the MATLAB/Simulink simulation environment. A fuzzy-PID controller is designed to make decisions on the active suspension control force as well as the ratio of the vertical load of the non-bearing wheel to the total weight of the vehicle is used as the rollover evaluation index to realize the rollover warning. Furthermore, the improvement effect of the control system is analyzed from the aspects of rollover evaluation index, roll angle and critical lifting angle. Finally, the simulation results show that the proposed method effectively improves the roll stability of the dump truck during the lifting operation and can widen the threshold range of the critical lift angle to a certain extent and prevent the vehicle from rolling over.

Assessing the dependence of vehicle rollover on many factors based on new 4D graphs

“…Additionally, using a gyro stabilizer to limit rollover is an exciting solution presented by Zhang et al in [20]. Besides, the combined use of active steering [21,22], active braking [23,24], active suspension [25][26][27], and several other active control systems also helps to improve this problem [28][29][30]. Tires play an important role in ensuring the car's stability when steering.…”

Research on the dynamics of a heavy mechanized bridge in the deployment phase of the lifting frame

“…In the study [13], the authors established a multi-body dynamics model of a dump truck using SIMPACK software, providing displacement, velocity, and acceleration results for various stages, although without theoretical calculations. In [14], a nonlinear model of the lifting and rolling process of dump trucks was established by considering the influence of elastic deformation of tires, suspension systems, and torsional deformation of cargo boxes on the rolling movement of the vehicle. In [15], the authors presented the oscillation of a hydraulic boom suspended freely during rotation, highlighting the significant influence of hydraulic valve control on the operational process.…”

Research on anti-rollover warning control of heavy dump truck lifting based on sliding mode-robust control

“…Finally, the effectiveness of the model was verified through real vehicle experiments. Guan et al 27 proposed an anti-rollover early warning control method for dump truck lifting based on active suspension, and verified by simulation that this method can effectively improve the stability of heavy dump truck lifting and unloading process. Li and Wang 28 proposed an auxiliary unloading device for heavy dump truck, established a virtual prototype model of the device, and verified by simulation that the model can shorten the unloading time and prevent dump truck rollover.…”