【作者】 赵力；

【导师】 冒晓建；

【作者基本信息】 上海交通大学 ， 动力工程及工程热物理， 2013， 硕士

【摘要】 本文基于并联中度混合动力客车,对电控机械式自动变速器(AMT,Automated Mechanical Transmission)工作过程中的关键技术进行了研究,对改善混合动力客车动力性和经济性、减轻驾驶员劳动强度、提高驾驶舒适性及行驶安全性具有重要的现实意义。主要研究内容如下:首先,本文通过调查研究国内外混合动力AMT发展现状,结合混合动力客车和AMT特点,确定了本文所研究的混合动力客车AMT系统的总体设计方案。通过对混合动力AMT系统中主要部件进行理论分析和计算,应用Matlab中Simulink/Stateflow建立系统的各个模块模型,并基于混合动力AMT起步、换挡等工况进行仿真,为设计方案和控制策略提供了可靠依据。其次,根据设计的混合动力AMT系统方案,本文重点研究了混合动力AMT系统关键控制技术。通过比较不同挡位自学习顺序,并应用预测自整定PID控制算法和挡位智能定位方法,开发了挡位自学习控制技术,此技术能够精确获取挡位位置,解决了因制造、装配、磨损、更换等因素导致变速器各挡位位置存在差异及变化而引起的换挡问题,为快速、准确换挡提供了保障;根据混合动力选换挡规律特点,为提高换挡效率、减小换挡冲击,本文有效协调了混合动力客车在选换挡过程中发动机和电机的扭矩分配控制,研究分析了分离离合器换挡和不分离离合器两种换挡策略,提高了换挡品质和零部件使用寿命;研究了混动力客车在起步和换挡过程离合器接合/分离的工作特点,采用混合控制法,对离合器起步和换挡过程进行了有效控制,提高了车辆综合性能。最后,本文搭建了混合动力AMT系统试验台架及试验整车系统,通过Microsoft Visual Studio进行编程,并在Codewarrior的环境下进行策略调试,针对混合动力客车AMT挡位自学习、选换挡控制、离合器控制的过程和效果进行了验证,结果表明本文研究开发的控制策略和程序是正确和有效的,达到了预期的效果。更多还原

【Abstract】 Based on parallel medium hybrid electric bus, this paper has done some research on the key technology of AMT(Automated Mechanical Transmission), which has an important realistic meaning for improving the overall performance of vehicle, such as dynamic property, economy, service life, steering stability, amenity and so on. The main research contents are as follow:Firstly, the paper describes the development and current situation of hybrid vehicle and AMT, and then determines the overall design plan, combined with the characteristics of hybrid electric bus and AMT. Through the theoretical analysis and calculation of the main parts in the hybrid with AMT system, the Simulink/Stateflow modes in Matlab have been built, and the simulations of starting and gear-shifting give reliable basis for the design and the control strategy.Secondly, according to the plan analysis,the paper focus on the key technology of AMT in parallel medium hybrid electric bus. Using prediction PID control method based on self-tuning parameters and intenlligent gear positioning method, self-learning control technology for AMT gear-shifting position has been developed,providing guarantee for flexible, quick and accurate gear-shifting behavior, because the gear shifting position would be different or changed by the manufacture, assemblage, wear and parts replacement. The gear-shifting control technology effectively coordinates the distribution of engine torque and motor torque when shifting based on the hybrid shifting characteristic. In order to improve gear shifting efficiency and reduce the impact of gear shifting, it compares the different process and control strategy between clutch engaged and disengaged when shifting. Using mixed control method, it makes detailed analysis of the key technology of clutch working and executive motor control when gear shifting and vehicle startingeffective clutch control has achived,and the overall performance of vehicle has been improved.At last, AMT test bench and sample hybrid bus have been built for the research on AMT technology in parallel medium hybrid electric bus. Through programming, developing and debugging in Microsoft Visual Studio and CodeWarrior, the tests of the technology and strategy mentioned above, such as self-learning control technology for AMT gear-shifting position, gear shifting control and clutch control in hybrid vehicle, have been proved to be correct and reasonable, achieving the expected result.更多还原