NVH Simulation Research and Optimization of Electric Vehicle Reducer

Qinyi Li; Junhong Li; Jialin Liu; Youtong Li; Haibo Zhao

doi:10.16578/j.issn.1004.2539.2022.02.018

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NVH Simulation Research and Optimization of Electric Vehicle Reducer

Test·Analysis | 更新时间：2022-09-25

- NVH Simulation Research and Optimization of Electric Vehicle Reducer
- Journal of Mechanical Transmission Vol. 46, Issue 2, Pages: 107-113(2022)
- 作者机构：
  
  1.广安职业技术学院智能制造与汽车工程学院，四川广安 638000
  2.沈阳理工大学汽车与交通学院，辽宁沈阳 110159
- 作者简介：
- 基金信息：
- DOI：10.16578/j.issn.1004.2539.2022.02.018
  CLC：
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李沁逸,李俊泓,刘嘉林等.电动汽车减速器NVH仿真研究与优化[J].机械传动,2022,46(02):107-113.

Li Qinyi,Li Junhong,Liu Jialin,et al.NVH Simulation Research and Optimization of Electric Vehicle Reducer[J].Journal of Mechanical Transmission,2022,46(02):107-113.
李沁逸,李俊泓,刘嘉林等.电动汽车减速器NVH仿真研究与优化[J].机械传动,2022,46(02):107-113. DOI： 10.16578/j.issn.1004.2539.2022.02.018.

Li Qinyi,Li Junhong,Liu Jialin,et al.NVH Simulation Research and Optimization of Electric Vehicle Reducer[J].Journal of Mechanical Transmission,2022,46(02):107-113. DOI： 10.16578/j.issn.1004.2539.2022.02.018.

摘要

减速器是电动汽车电驱动总成的关键部件，是电动汽车的主要噪声来源之一。减速器噪声水平直接关系电动汽车整车噪声（Noise）、振动（Vibration）、声振粗糙度（Harshness）(简称NVH）性能和乘客舒适性。以某款减速器为研究对象，分析了减速器振动噪声产生机理。在此基础上，引出了评估减速器NVH的4个仿真指标：减速器传递误差、接触斑点、轴承座动刚度和模态。从这4个指标出发，分别进行了仿真研究和试验对标。结果说明，仿真和试验结果一致性较好。基于以上研究成果，判定该减速器二级齿轮的传递误差和接触斑点需要优化。通过加强轮辐结构和轮齿修形等优化手段，结果显示，二级齿轮仿真传递误差和接触斑点得到改善；优化方案装车试验测试的噪声也得到了改善。

Abstract

As a key component of electric drive assembly of electric vehicles，the reducer is one of the main noise sources of electric vehicles.The noise level of the reducer is directly related to electric vehicle noise，vibration， harshness （for short NVH） performance and passenger comfort.Taking a certain type of reducer as the research object，the mechanism of vibration and noise generation of the reducer is analyzed. On this basis，four simulation indicators for evaluating the NVH of the reducer are introduced: transmission error of the reducer，contact spots，dynamic stiffness of the bearing seat and modal.Based on these four indicators，simulation research and test benchmarking are carried out respectively.The results show the simulation and test results are in good agreement.Based on the above research results，the transmission error and contact spots of the two-stage gear of the reducer need to be optimized. Through strengthening of spoke structures and modification of gear teeth，the results show that the simulation transmission error and contact spots of the secondary gear can be improved and the noise of the optimized scheme test can also be reduced.

关键词

减速器电动汽车NVH传递误差接触斑点动刚度模态噪声

Keywords

ReducerElectric vehicleNVHTransmission errorContact patternDynamic stiffnessModalNoise

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