混合动力汽车传动系统建模与仿真研究

河北工业大学 硕士学位论文 混合动力汽车传动系统建模与仿真研究 姓名：赵晓静 申请学位级别：硕士 专业：机械工程 指导教师：武一民 20091101

河北工业大学硕士学位论文混合动力汽车传动系统建模与仿真研究摘要混合动力汽车将发动机、电动机和能量储存装置组合在一起，通过它们之间的良好匹 配和优化控制，可以充分发挥传统内燃机汽车和纯电动汽车的优点，能够明显减少汽车排 放和降低油耗。计算机建模和仿真技术的应用，可以有效降低汽车开发周期和成本。混合 动力汽车传动系统建模与仿真是混合动力汽车传动系统参数匹配优化和能量控制策略优 化的重要技术手段。 本文对比分析了三代丰田 PRIUS 混合动力传动系统的结构和基本工作原理， 建立了传 动系统发动机、动力分离装置、电动/发电机和动力用蓄电池等各子系统模型，基于统一的 动力传动系统结构模型，以动力分离装置为纽带，通过整合子系统模型建立了丰田 PRIUS 混合动力传动系统的综合数学模型，解析了系统各元件之间的扭矩和转速理论关系。 根据所建立的混合动力系统各元件模型和系统综合模型，基于 MATLAB/SIMULINK 软件，开发了混合动力传动系统各元件和系统仿真模块。基于所建立的稳态控制策略，对 丰田 PRIUS 混合动力系统稳态巡航工况进行了仿真分析， 得到了稳态巡航车速下混合动力 系统中各元件的输出特性；基于所建立的动态控制逻辑，在模拟城市道路行驶的日本 10 模式工况下，对丰田 PRIUS 混合动力系统的动态特性进行了仿真分析，得到了动态工况下 混合动力系统中各元件的输出特性。 仿真结果表明，基于混合动力传动系统数学模型所开发的仿真模块，在给定的整车参 数和控制策略下，可以有效迅速的得到混合动力系统各元件的输出特性，从而帮助工程师 匹配、优化混合动力传动系统设计参数和控制策略。关键词：混合动力汽车，传动系统，动力分离装置，行星齿轮，建模，仿真i

河北工业大学硕士学位论文RESEARCH ON THE MODELLING AND SIMULATION OF HYBRID VEHICLE POWERTRAINABSTRACTHybrid Electric Vehicle (HEV) integrates and controls Internal Combustion Engine (ICE), Motor/Generator (MG) and Energy Storage System (ESS) efficiently with optimal control strategy. The HEV works effectively by integrating the respective advantage of traditional internal combustion vehicle to decrease the pollution emissions and the fuel consumption remarkably. The technology of modeling and simulation by using computer contributes to reduce time and cost of vehicle development. It is the basic and essential work to establish the system model for the development, simulation and optimization of powertrain and energy management of the hybrid vehicle. In this thesis, the powertrain architecture is analyzed for understanding the basic principle and difference among hybrid power systems of three generations for TOYOTA/PRIUS. Taken the power split unit as a ligament of system and based on the models of engine, power split unit, motor/generator and traction battery, the powertrain mathematical model was constructed based on a uniform architecture which integrates three generations TOYOTA/PRIUS. The principle dependence between torque and speed of respective component is analyzed and clarified. The simulation modules for the powertrain and respective components of HEV are developed based on the models established above by using the software of MATLAB/SIMULINK. The Toyota Hybrid System (THS) is analyzed and simulated at the steady cruise condition by using the steady control strategy and the output characteristics of each component of the powertrain system at respective given vehicle velocity is clarified. The Toyota Hybrid System (THS) is analyzed and simulated at the Japan 10 mode drive cycle by using the dynamic control logic and the output characteristics of each component of the powertrain system at the real-time operating condition is clarified. The simulation results indicate that the simulation module developed in the base of mathematics models of the hybrid powertrain system can achieve output characteristics of each component of the powertrain system efficiently and effectively, for the given parameters of the whole vehicle and control strategy. It helps engineers to match and optimize the design parameters and improve control strategy of the powertrain for HEV.KEY WORDS: hybrid electric vehicle, powertrain, power split unit, planetary gear, modeling, simulationii

河北工业大学硕士学位论文符号说明THS——丰田混合动力汽车，Toyota Hybrid System HEV——混合动力电动汽车，Hybrid Electric Vehicle PSU——动力分离装置，Power Split Unit ICE——内燃发动机，Internal Combustion Engine MG——电动/发电机，Motor/Generator ESS——能量储存系统，Energy Storage System IMA——集成电机辅助系统，Integrated Motor Assist BSFC——制动燃油消耗率，Brake specific fuel consumption WOT——最大节气门开度，Wide Open Throttle OOL——最佳操作线，Optimal Operation Line SOC——蓄电池荷电状态值，State of Charge S——太阳轮啮合半径，单位：m R——齿圈啮合半径，单位：mPe ——发动机输出功率，单位：kW Te ——发动机输出扭矩，单位：Nm ne ——发动机转速，单位：rpm m f ——发动机瞬时油耗，单位：kg/sωr——齿圈旋转角速度，单位：rpm ωs——太阳轮旋转角速度，单位：rpm ωc——行星架旋转角速度，单位：rpm ωp——行星轮自转角速度，单位：rpm Js——太阳轮的转动惯量，单位：kgm2 Jc——行星架的转动惯量，单位：kgm2 Jr——齿圈的转动 …… 此处隐藏：12437字，全部文档内容请下载后查看。喜欢就下载吧 ……