混合动力汽车电动机辅助控制策略研究

Research on Motor Auxiliary Control Strategy of Hybrid Electric Vehicle

混合动力汽车结合了传统和纯电动汽车驱动系统的特点,在保证车辆动力性的同时,可明显改善经济性。控制策略是混合动力汽车的核心,其根据驾驶员意图和行驶工况协调各部件间的能量流动合理进行动力分配,优化车载能源,提高整车经济性,适当降低排放。通过参照混联式混合动力汽车动力系统,选择基于逻辑规则中的电动机辅助控制策略;基于AVL CRUISE汽车仿真软件完成整车模型搭建,通过MATLAB/SIMULINK建立控制策略;在典型新欧洲行驶循环CYC_NEDC工况下验证所设计控制策略的可行性,并分析行驶工况数据。结果表明:该控制策略可满足车辆需求,且经济性能表现良好。

Hybrid electric vehicle combines the characteristics of traditional and pure electric vehicle drive system,which can significantly improve the economy while ensuring the vehicle power.The control strategy is the core of hybrid electric vehicle.It coordinates the energy flow between components according to the driver s intention and driving conditions,reasonably distributes power,optimizes on-board energy,improves the economy of the vehicle,and appropriately reduces emissions.By referring to the hybrid vehicle power system,the motor auxiliary control strategy based on logic rules was selected.Vehicle model building was complete based on AVL CRUISE automobile simulation software,and control strategy was established through MATLAB/SIMULINK.The feasibility of the designed control strategy was verified under the typical new European driving cycle CYC_NEDC,and the data of driving conditions were analyzed.The result shows that the control strategy can meet the needs of the vehicle,and the economic performance is good.