Abstract: In order to improve the stability of tank trucks, which can cause serious casualties, economic losses and environmental pollution because of vehicle-liquid coupling, an equivalent sloshing dynamics model of the tank trucks is established. This model consists of 3 DOF vehicle model and the equivalent pendulum model, which represents the movement of the liquid in the tank. Further, the anti-rollover control strategy of the tank trucks based on differential breaking is proposed. The Trucksim/Simulink co-simulation is carried out. Comparison of the state variables of the tank trucks with the same liquid cargo and solid cargo, and selected step condition, proves that the liquid sloshing in the tank influences the motion of the truck. Also it is demonstrated that the anti-rollover strategy is effective by comparing the states of tank trucks with or without control under the step condition and the hook condition.

Key words: vehicle engineering, tank trucks, equivalent sloshing model, liquid sloshing, anti-rollover control