School of Mechatronic Engineering, China University of Mining and Technology
Science and Technology Quality Information Department , Xuzhou Construction Machinery Group Co., Ltd.
Xuzhou XCMG Heavy Vehicle Co., Ltd.

矿用自卸车因其“多拉快跑”的特性而被广泛应用于露天矿山中进行煤炭、矿石等物料的运输。针对经典两轴车及宽体车传统驱动系统存在的动力性能有限、燃油经济性不佳、尾气排放严重等现实问题，面向露天矿自卸车重型化发展对其动力系统提出的超大功率需求与高动力经济性要求，提出了一种新型轮−轴协同式混合动力系统并研究其控制策略。首先，设计了“中轴由柴油机驱动、前后轴由电机驱动”的新型轮−轴协同式混合动力驱动系统，制定了8种工作模式；其次，分析矿用自卸车典型行驶工况，开展循环工况路谱数据采集试验，建立了露天矿专用循环工况曲线；再次，分析确定了轮−轴协同式混合动力系统在不同混动模式下的模式切换及转矩分配方案，利用Matlab/Simulink搭建了基于转矩的逻辑门限值整车控制策略模型；最后，在CRUISE软件中搭建轮−轴协同式混合动力矿车模型，导入控制策略后进行联合仿真试验，分别对车辆的动力经济性能和牵引重量的提升效果进行对比分析。结果表明：若采用提升性能方案，经混动改造后满载时的最高车速、最大爬坡度分别提高了29.51%和54.36%，0～30 km/h的加速时间、百公里综合燃油消耗分别下降了82.30%和56.29%，发动机、电机、电容的工作特性更佳，整车的动力性能与经济性能均得到了较大改善；若采用增大载重方案，经混动改造后整车载重可提升21.54%，满载时的最高车速、最大爬坡度分别提高了28.60%和52.31%，而0～30 km/h的加速时间、百公里综合燃油消耗则分别下降了77.09%和42.15%。

Mining dump trucks are widely used in open-pit mines for the transportation of coal, ore and other materials due to their “Super heavy load transportation task and high driving speed” characteristics. In view of the practical problems such as limited power performance, poor fuel economy and serious exhaust emission existing in the traditional drive systems of classic two axle mine trucks and wide body mine dump trucks, a new type of wheel-axle cooperation hybrid system is proposed and its control strategy is studied in view of the super power demand and high power economy requirements of the power system of the open-pit dump truck due to the heavy-duty development. First of all, a new type of wheel-axle hybrid drive system with “the center axle is driven by a diesel engine and the front and rear axles are driven by motors” is designed, and eight working modes are studied and formulated; Secondly, the typical driving conditions of mining dump truck are analyzed, the road spectrum data collection experiment of cycle is carried out, and the special cycle curve of open-pit mine is established; Thirdly, the mode switching and torque distribution schemes of the wheel-axle cooperative hybrid power system under different hybrid modes are analyzed and determined, and the vehicle control strategy model based on the logical threshold of torque is built using Matlab / Simulink; Finally, the wheel-axle cooperative hybrid electric mine car model is built in CRUISE software, and after the control strategy is imported, the joint simulation test is carried out to compare and analyze the dynamic economic performance of the vehicle and the lifting effect of the traction weight. The results show that with the performance improvement scheme, the maximum speed and maximum climbing gradient at full load are increased by 29.51% and 54.36% respectively, the acceleration time of 0-30km/h and the comprehensive fuel consumption of 100 km are reduced by 82.30% and 56.29% respectively, the working characteristics of the engine, motor and capacitor are better, and the dynamic performance and economic performance of the whole vehicle are greatly improved; If the load increase scheme is adopted, the load of the whole vehicle can be increased by 21.54% after the hybrid transformation. The maximum speed and maximum climbing gradient at full load are increased by 28.60% and 52.31% respectively, while the acceleration time of 0-30km/h and the comprehensive fuel consumption of 100 km are reduced by 77.09% and 42.15% respectively.

徐州市重点研发计划资助项目（KC22419）；装备预研教育部联合基金资助项目（6141A02033518）；江苏高校优势学科建设工程（PAPD）资助项目

陆　耀，鲍久圣，胡格格，等. 重型矿卡轮−轴协同式混动系统及控制策略研究[J]. 煤炭科学技术，2023，51（S1）：404−420.

LU Yao，BAO Jiusheng，HU Gege，et al. Research on the wheel-axle cooperation hybrid system and control strategy of heavy mining truck[J]. Coal Science and Technology，2023，51（S1）：404−420.