To solve the contradiction between the trafficability and the power of traditional heavy trucks, the study proposes a coordinated control of hydraulic hub-motor auxiliary system for heavy truck to make full use of the coefficient of ground aadhesion and engine power. With hydraulic hub-motor auxiliary system (HHMAS) in the non-drive front wheels, the front wheels drive the truck on bad roads to ensure the trucks tractive capacity and exit on good roads to achieve better transmission efficiency. Based on the HHMAS, a wheel speed coordinated control strategy that considers slip efficiency to make system work effectively is designed. The pump displacement composite control method in the real vehicle is tested, the steady-state error is basically within 0.03. Experimental results show that HHMAS has a good effect on the control strategy presented. Hence, the study on HHMAS is a valuable to hydraulic hybrid application.

为解决传统重型卡车的通行性与动力之间的矛盾，研究提出了一种利用重型卡车的地面附着系数和发动机功率对重型卡车液压轮毂-电机辅助系统进行协调控制的方法。在非驱动式前轮中使用液压轮毂电机辅助系统（HHMAS），前轮可在恶劣的道路上驱动卡车，以确保卡车的牵引能力并在良好的道路上驶出，以实现更高的传动效率。基于HHMAS，设计了一种考虑滑移效率使系统有效运行的轮速协调控制策略。对实际车辆中的泵排量复合控制方法进行了测试，稳态误差基本在0.03以内。实验结果表明，HMBAS对所提出的控制策略具有良好的效果。