【作者】 杜保贞；

【导师】 刘涛；

【作者基本信息】 哈尔滨工业大学 ， 车辆工程， 2011， 硕士

【摘要】 科技的飞速发展也无法阻挡全球自然灾害的频频发生,环境恶化带来的全球隐患越来越严重。为了人类的生存及社会的和谐发展,节能与环保更加被人们重视。作为国家支柱产业之一的汽车行业,研制开发低能耗、低排放,并能满足各种使用性能需求的新型车辆成为21世纪初世界各国汽车行业的重要研究课题。其中混合动力车辆以其突出的优点而备受关注。动力耦合机构是混合动力车辆的核心组成部分,它不仅对混合动力车辆的动力性、经济性以及舒适性有直接的影响,还会关系到传动系统的空间布置形式。本文以吉林轻卡改装的并联式液压混合动力车辆为研究对象,综合利用了可靠性优化设计方法、三维建模技术和有限元分析法对动力耦合机构进行了结构设计。本文在查阅国内外相关文献的基础上,综述了动力耦合机构和可靠性优化设计的研究现状,对比、分析了动力耦合机构的配置模式和布置形式,根据整车性能需求,设计了差速耦合式动力耦合机构。差速耦合式方案可以较灵活的匹配发动机的工作特性和液压泵/马达的输出特性。本课题在其结构设计过程中应用了可靠性优化设计方法,力求使动力耦合机构体积最小,重量最轻,传动更加平稳,并将可靠度作为约束条件,结合动力耦合机构的结构和功能要求,建立了各零部件的多目标可靠性优化设计数学模型,基于Matlab对其进行了优化,同时对各约束条件进行了敏感度调试。根据可靠性优化设计的结果,基于Catia建立了动力耦合机构的三维模型,对装配体进行了干涉分析,并运用有限元分析法校核了各轴的强度。最后,本文还开发了Matlab与VB的集成程序,设计了动力耦合机构齿轮系可靠性优化设计的人机交互界面,为动力耦合机构齿轮系设计提供了直观的可视化窗口。更多还原

【Abstract】 The rapid development of science and technology can not stop the world’s natural disasters occur frequently. Environmental degradation result of global hidden trouble more and more serious. For posterity survival and social harmony development, people pay more attention to saving energy and protecting environment. As one of the pillar industries of the national, automotive industry should set the example, developed low energy consumption, low emissions, to meet all kinds of performance requirements of new vehicles. The prominent advantage of hybrid vehicles have been attracted much attention by people. Hydraulic hybrid vehicles fitted with a hydraulic drive system on the original car transmission system. According to the demands of vehicle, two sources of power distribute the output energy, and distribution of the energy need to realize by coupling transmission mechanism.The design of dynamic coupling transmission mechanism directly related to the vehicle’s power, fuel economy and comfort and so on. Reliable power coupling system is to play the good performance of the core of car parts. However, from an economic point of view, the pursuit of high reliability, the manufacturing costs inevitable increased, so, in order to achieve a reasonable match with the economy and efficiency, must be considered, optimization, reliability of optimization design for the coupler.In consulting a large number of the basis of relevant literature at home and abroad, this article summarizes the research situation of coupling drive system reliability optimization design. Analysis of the coupled system coordinate manner and according to design requirements and characteristics of planetary gear transmission, design a coupling transmission system match pattern. In structural design, simultaneously reliability optimization design, through the reliability optimization design optimizing institutional structure. This article is based on the coupling body the smallest, lightest, and to drive more smoothly as the goal, as one of the constraints of reliability, with the parts of coupler coordination and functional requirements, using Matlab toolbox for the gears, shafts and spline optimization of reliability of the coupler. According to the optimization results, using of CATIA and AutoCAD draw a three-dimensional structure and two-dimensional Engineering drawings of the coupler. Finally, this paper also developed a Matlab and VB integration program, designed the coupler transmission system reliability optimization design for the subsequent man-machine interface, for subsequent coupling system design provides a visual window.更多还原