Simulation Research On Rolling Control Of Commercial Vehicles Using New Electronically Controlled Suspension

With the rapid development of the automotive industry,the commercial vehicle ownership is getting higher and higher.However,due to the high position of the center of gravity,the large weight and volume,and the narrow wheelbase of the commercial vehicle,it is prone to rollover during driving.Once the commercial vehicle rollover occurs which will result in huge casualties and property losses.To solve this problem,this paper proposes a new type of electronically controlled suspension for the roll control of commercial vehicles.The main research work is as follows:(1)Aiming at the problem that commercial vehicles are prone to rollover,a new type of electronically controlled suspension is proposed,which is composed of an electrically inclined suspension system and an active linkage slider mechanism.The ADAMS/Car software was used to establish the front and rear suspension dynamic model and the full vehicle dynamics model.The simulation of the suspension system and the vehicle’s handling stability simulation test were performed.The dynamic characteristics of the new suspension structure were obtained and the stability of the vehicle was verified.(2)A simple control force is set to control the electronically controlled suspension system and the active link slider mechanism.By analyzing the influence of the stiffness and damping of the electronically controlled suspension system and the magnitude of the actuator force.With regard to the influence of the steering performance,the distribution relations of the suspension stiffness and damping control amount and the slider actuator control force on the front and rear axles were obtained.(3)Using the method of co-simulation,a control algorithm was designed to study the roll control of the vehicle,and the vehicle’s roll stability under typical hook conditions,angle step conditions,and sinusoidal steering conditions was simulated.The effectiveness of the new electronically controlled suspension designed for the roll control of the vehicle is verified,and the fuzzy PID control has better control effect than the incremental PID control.In this paper,the dynamic characteristics of the new electronically controlled suspension are analyzed using the multi-body dynamics method,which provides an important basis for the design of the new electronically controlled suspension.The obtained controls of stiffness and damping and actuator force distribution on the front and rear axle which affects the steady-state steering performance of the vehicle,has important reference value for the control strategy design of the new electronically controlled suspension.