论文部分内容阅读
以一种充电保持型并联式混合动力电动汽车(HYBRID ELECTRICAL VEHICLE,HEV)为具体对象,研究以瞬时等效燃油经济性和排放性能为综合优化目标的控制策略。该策略以传动系统的能量转换效率和排放“效率”作为评价燃油经济性和排放的指标来建立优化目标方程,通过基于HEV整车及动力总成相关数学模型所建立的MATLAB/SIMULINK仿真优化平台,搜寻出全部转速-转矩需求条件下动力总成各元件的理想能量分配及相应档位,并以MAP图的形式存储于车载监控器中。监控器根据HEV荷电保持的设计要求,按瞬时工况调用这些MAP图,以简单查表计算方式对理想值实时地作适当修正和调整。所述监控策略的有效性、实时性通过若干典型行驶工况仿真及实车应用得以证实,展现出良好的实用价值。
Taking a HYBRID ELECTRICAL VEHICLE (HEV) as a specific object, this paper studies a control strategy based on instantaneous equivalent fuel economy and emission performance as a comprehensive optimization objective. The strategy establishes the optimization objective equation based on the energy conversion efficiency and emission “efficiency” of the transmission system as an index to evaluate the fuel economy and emissions. Based on the MATLAB / SIMULINK simulation optimization platform established based on HEV vehicle and powertrain related mathematical models , Search out all the speed - torque requirements of the powertrain components of the ideal energy distribution and the corresponding stalls, and map in the form of MAP stored in the vehicle monitor. Monitor according to HEV charge to maintain the design requirements, call these MAP map according to the instantaneous conditions, the simple look-up table calculation of the ideal value in real time for proper correction and adjustment. The effectiveness of the monitoring strategy, real-time through a number of typical driving conditions simulation and real car applications to be confirmed, showing good practical value.