Research on Control Target of Truck Platoon Based on Maximizing Fuel Saving Rate

In view of the inability of traditional constant spacing policy to maximize the fuel saving rate of the truck platoon when choosing the smaller desired vehicle spacing as the control target, a new control strategy is proposed in this article. This strategy dramatically reduces the fuel consumption of the truck platoon from the start to the formation of a stable platoon, thus greatly increasing the fuel saving rate of the platoon. To prove the effectiveness of the strategy, this article carried out the longitudinal dynamics modeling of the truck and the modeling of the fuel consumption model of engine first. Longitudinal dynamics modeling establishes the dynamic equations for truck braking and nonbraking. The fuel consumption model of engine is built using a three-dimensional map. Second, the design of the controller is described. The controller calculates the desired acceleration of the following vehicle based on the speed error and the following distance error. The longitudinal dynamic equation of the truck is used to derive the desired engine torque or the desired braking torque of the following vehicle, which realizing the decision of the throttle opening and the wheel cylinder pressure of the following vehicle according to actual conditions. The software simulation is carried out in the end. The simulation results show that the new control strategy is more fuel efficient than the traditional CSP.