摘要
传统电动汽车采用结构简单的单级减速器越来越不能满足电动汽车对传动效率的要求,因此需要向电动汽车引入两挡或多挡变速器来提升整个动力总成的效率。提出了一种新型电动汽车两挡变速器,它由楔形换挡机构和行星轮系组成,可实现无动力冲击的高效换挡。此外,介绍了变速器的基本结构和工作原理,应用Lagrange自由度Lagrange方程,并且搭建了基于MATLAB/Simulink验证了数学模型的准确性。为同类型变速器的动力学建模和换挡品质优化研究提供了一定依据。
The simple single-stage reducer used in traditional electric vehicles is not enough to meet the requirements of electric vehicle for transmission efficiency,therefore,it is necessary to introduce two or more speeds transmission to electric vehicles to improve the efficiency of the whole power assembly.A new type of electric vehicle two-speed transmission is presented,which is composed of a wedge changing mechanism and a planetary gear system,and it can realize the efficient shift without power shock.In addition,the basic structure and working principle are introduced,and Lagrange method is applied to analyze the dynamics modeling of each component of the transmission,a two-degree of freedom Lagrange equation is established,the shift pro.cess model is built based on MATLAB/Simulink,the shift process is analyzed and the accuracy of the mathemat.ical model is verified.It provides a certain basis for the study on dynamics modeling and shift quality optimiza.tion of the same type of transmission.
作者
李耀刚
张硕
杨珏
龙海洋
刘畅
谭森起
Li Yaogang;Zhang Shuo;Yang Jue;Long Haiyang;Liu Chang;Tan Senqi(School of Mechanical Engineering,North China University of Science and Technology,Tangshan 063210,China;School of Mechanical Engineering,University of Science & Technology Beijing,Beijing 100083,China)
出处
《机械传动》
北大核心
2019年第3期41-47,共7页
Journal of Mechanical Transmission
基金
河北省自然科学基金(E2017209059)
华北理工大学研究生创新项目(2018S23)
