Design and Dynamics Modeling of a New Two-speed Transmission

Yaogang Li; Shuo Zhang; Jue Yang; Haiyang Long; Chang Liu; Senqi Tan

doi:10.16578/j.issn.1004.2539.2019.03.008

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Design and Dynamics Modeling of a New Two-speed Transmission

Design· Calculation | 更新时间：2022-10-03

- Design and Dynamics Modeling of a New Two-speed Transmission
- Journal of Mechanical Transmission Vol. 43, Issue 3, Pages: 41-47(2019)
- 作者机构：
  
  1.华北理工大学机械工程学院，河北唐山 063210
  2.北京科技大学机械工程学院，北京 100083
- 作者简介：
- 基金信息：
- DOI：10.16578/j.issn.1004.2539.2019.03.008
  CLC：
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李耀刚,张硕,杨珏等.新型两挡变速器设计与动力学建模[J].机械传动,2019,43(03):41-47.

Li Yaogang,Zhang Shuo,Yang Jue,et al.Design and Dynamics Modeling of a New Two-speed Transmission[J].Journal of Mechanical Transmission,2019,43(03):41-47.
李耀刚,张硕,杨珏等.新型两挡变速器设计与动力学建模[J].机械传动,2019,43(03):41-47. DOI： 10.16578/j.issn.1004.2539.2019.03.008.

Li Yaogang,Zhang Shuo,Yang Jue,et al.Design and Dynamics Modeling of a New Two-speed Transmission[J].Journal of Mechanical Transmission,2019,43(03):41-47. DOI： 10.16578/j.issn.1004.2539.2019.03.008.

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法对变速器各个组成进行了动力学建模分析，建立了二自由度Lagrange方程，并且搭建了基于MATLAB/Simulink的换挡过程模型，对换挡过程进行了分析，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。

Abstract

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 process model is built based on MATLAB/Simulink， the shift process is analyzed and the accuracy of the mathematical model is verified. It provides a certain basis for the study on dynamics modeling and shift quality optimization of the same type of transmission.

关键词

电动汽车两挡变速器行星轮系Lagrange方程动力学建模

Keywords

Electric vehicleTwo-speed transmissionPlanetary gear trainLagrange equationDynamics modeling

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