【作者】 刘金玲；

【导师】 宋健；

【作者基本信息】 清华大学 ， 机械工程， 2004， 硕士

【摘要】 由汽车的使用而引起的环境污染和能源短缺问题引起了人们的普遍关注,在纯电动汽车暂时不能满足人们的需求的情况下,制造商和工程师们把目光转向了混合动力电动汽车。混合动力电动汽车(Hybrid Electric Vehicle,简称HEV)指的是具有两种或两种以上可以提供汽车驱动能量的能量存储,吸收或转换装置的汽车,并且其中至少有一种装置可以提供电能。混合动力汽车的控制策略是解决汽车行驶时所需要的能量和功率何时和如何由车上各种不同的动力总成来提供的能量管理问题,也就是如何根据使用要求有效的利用不同类型的动力,以达到节能环保的目的。本论文主要以SY6480混合动力客车为研究对象,为其制定了三种不同的控制策略:电动助力控制策略,实时控制策略,模糊逻辑控制策略。文中详细阐述了三种控制策略的特点。在MATLAB/SIMULINK环境下建立了整车仿真模型,比较了三种控制策略的燃油经济性。根据控制策略的要求,确定了控制器的输入及控制器的结构,为控制策略的实现奠定了基础。分析了由于制动能回收导致的制动力的重新分配对于车辆性能的影响,以及制动能回收的效果。最后以SY6480并联混合动力客车为例讨论了并联混合动力客车参数匹配时应注意的问题。更多还原

【Abstract】 Because environment pollution and shortage of the energy caused by the using of cars are increasing concerned, the development of hybrid electric vehicles (HEV) has taken on an accelerated pace. The general definition of HEV is a vehicle in which propulsion energy is available from two or more kinds or types of energy stores, sources, or converters and at least one of them can deliver electrical energy. Ordinary people have already borne in mind that an HEV is simply a vehicle having both an ICE and electric motor.Control strategies for hybrid vehicles are algorithms that choose at each sampling time the power split between the engine and the motor in order to fulfill the demands of saving energy and environment protection. Three different control strategies for SY6480 parallel HEV are designed in this paper. They are electric assist, real time and fuzzy logic control strategy. The characteristic of these three control strategies are given in details.With the help of ADVISOR, the vehicle model for SY6480 PHEV is built in MATLAB/SIMULINK environment in order to compare the fuel consumption of different control strategies.According to the requirement of different control strategies, the input signals and structure of the controller are discussed. It is the basis of the realization of the control strategy.How the regenerative braking effecting on the vehicle performance is analyzed and how many percent braking energy can be regenerated is given.Finally what should be kept in mind when matching the parameters of PHEV is discussed.更多还原