【作者】 陈欢；

【导师】 张重雄； 卓陈祥；

【作者基本信息】 南京理工大学 ， 电子与通信工程， 2012， 硕士

【摘要】 混合动力汽车,因其能够有效的兼顾节能和环保两方面的因素,成为了汽车今后发展的方向。本文主要研究混合动力汽车的自动离合器控制系统,所研究的自动离合器包括节能离合器和机械式自动变速箱(AMT)离合器,前者用于配合实现混合动力工况,后者用于配合AMT执行换挡操作。论文研究工作主要包括四个部分：1、介绍了本项目混合动力汽车的结构方案,以及两种自动离合器各自所起的作用,然后阐述了自动离合器的原理、发展和分类,最后具体分析了自动离合器系统的控制策略和评价指标。2、研究和分析了国内外若干种自动离合器执行机构方案,提出本系统采用的电机—液压方案,然后介绍了膜片弹簧特性,包括负荷特性、扭矩传递特性和磨损特性,最后在此基础上对离合器执行机构的参数进行了计算,选择了合适的直流无刷电机。3、阐述了直流无刷电机的结构原理、数学模型、控制方法以及PID(比例积分微分)控制策略,并用Matlab/Simulink工具对直流无刷电机控制系统进行仿真,对电机有关性能进行了分析,为研究性能优良的直流无刷电机数字控制奠定了基础。4、设计了自动离合器控制系统,并在此基础上设计出通讯模块的软硬件部分,实现了上、下位机间较好的信息传输。更多还原

【Abstract】 Hybrid technology is regarded as one of the most promising technologies for clean vehicles through worldwide. The main topic of this dissertation is the automatic clutch control system for HEV and its implementation in the real vehicle. Automatic clutch in the paper include power-frugal clutch with the realization of HEV operating conditions, and AMT (Automatic Mechanical Transmission) clutch used to cooperate shifting operations. The dissertation is divided into four main parts as follows:The first part introduces the scheme and structure of HEV in our project, as well as roles of two automatic clutches with different functions. Then the automatic clutch system is expounded in details, including its principle, development and classification. Also, automatic clutch control strategy and evaluation criteria are investigated.In the analysis of automatic clutch executing agency scheme home and abroad, the second part put forward a motor-hydraulic scheme adopted in our system. Then diaphragm spring features are expounded, including load characteristics, torque transfer characteristics and wear characteristics. On this basis, the system parameters are calculated and an appropriate brushless DC (BLDC) motor is selected for the clutch executing agency.The third part gives detailed study of BLDC motor including its structure, principle, mathematical models, control method, and PID control strategy. Then Matlab/Simulink toolbox is used for the simulation of BLDC motor control system, and the BLDC motor relevant properties are analysed based on the simulation results which lay the foundation for the study of the digital controlled BLDC motor system with high performances.Automatic clutch control system is proposed in the fourth part, and the communication module is also designed based on the system. Information transmission can be achieved between PC and cotroller.更多还原