插电式混合动力客车AMT换挡策略设计与仿真

发布时间：2018-05-02 09:50

本文选题：插电式混合动力客车 + AMT　；参考：《燕山大学》2016年硕士论文

【摘要】：插电式混合动力电动汽车作为新能源汽车之一,兼顾了电动汽车与传统汽车的优点。对配备了电控机械式自动变速器AMT的混合动力系统而言,AMT的换挡策略对于提高整车性能有着重要意义。论文首先介绍了传统汽车AMT换挡策略的设计方法,并参照其方法对所研究车辆进行了最佳动力性和最佳经济性换挡策略的制定,为插电式混合动力客车AMT换挡策略的制定做了准备工作。其次,论文分析了插电式混合动力汽车的整车结构和部件性能,为仿真模型的搭建做好基础工作。论文依据插电式混合动力客车自身特点,参考传统换挡策略并考虑电机参数对换挡过程的影响,选取车速、发动机油门和电机等效油门信号为控制参数,制定了三参数换挡策略:以换挡前后两相邻挡位的加速度相等时整车动力性最佳为依据,制定了最佳动力性换挡策略;将耗电量转化为耗油量展开讨论并计算,依据原地起步连续换挡升至某一规定车速过程中所消耗综合能量最低,制定了最佳经济性换挡策略。通过Simulink模型仿真和实车道路试验对换挡策略的合理性进行验证。通过循环工况仿真分析,证明了三参数换挡策略较传统换挡策略的优势,并对比分析两种换挡策略的差异。通过实车道路试验,对比并分析了实车运行结果与仿真结果,证明了其动力性能和经济性能的提高和改善,验证了所设计换挡策略的合理性和实用性。
[Abstract]:As one of the new energy vehicles, plug-in hybrid electric vehicles (HEVs) take into account the advantages of electric vehicles and traditional vehicles. For hybrid power system equipped with electrically controlled mechanical automatic transmission (AMT), the shift strategy is of great significance to improve the performance of the whole vehicle. Firstly, the paper introduces the design method of traditional AMT shift strategy, and makes the best power and economy shift strategy according to its method. The preparation for the formulation of AMT shift strategy for plug-in hybrid electric bus is made. Secondly, the structure and component performance of plug-in hybrid electric vehicle are analyzed in order to build the simulation model. According to the characteristics of the plug-in hybrid electric bus, referring to the traditional shift strategy and considering the influence of motor parameters on the shift process, the speed, the engine throttle and the equivalent throttle signal of the motor are selected as the control parameters. A three-parameter shift strategy is formulated: based on the optimal dynamic performance of the vehicle when the acceleration of the two adjacent gears before and after the gear shift is equal, the optimal shifting strategy is formulated, the power consumption is converted into the fuel consumption and the power consumption is discussed and calculated. According to the minimum comprehensive energy consumption in the process of continuous shift in situ starting up to a specified speed, the optimal economic shift strategy is established. The rationality of shift strategy is verified by Simulink model simulation and real vehicle road test. The advantages of the three-parameter shift strategy over the traditional shift strategy are proved by the simulation analysis of the cycle conditions, and the differences between the two shifting strategies are compared and analyzed. Through the road test of real vehicle, the results of real vehicle running and simulation are compared and analyzed, which proves the improvement and improvement of its dynamic and economic performance, and verifies the rationality and practicability of the designed shift strategy.
【学位授予单位】：燕山大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U469.7;U463.2

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