汽车工程 ›› 2023, Vol. 45 ›› Issue (5): 845-853.doi: 10.19562/j.chinasae.qcgc.2023.05.014

所属专题: 新能源汽车技术-电驱动&能量管理2023年

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考虑参数不确定性的驱动电机振动特性分析

吕辉1,2,姜帅1,魏政君1(),曹懿莎3   

  1. 1.华南理工大学机械与汽车工程学院,广州  510641
    2.广西科技大学,广西汽车零部件与整车技术重点实验室,柳州  545006
    3.中汽检测技术有限公司,广州  510530
  • 收稿日期:2022-10-26 修回日期:2022-12-01 出版日期:2023-05-25 发布日期:2023-05-26
  • 通讯作者: 魏政君 E-mail:weizhj@scut.edu.cn
  • 基金资助:
    国家自然科学基金面上项目(51975217);广东省自然科学基金面上项目(2023A1515011585);广西汽车零部件与整车技术重点实验室开放课题(2022KFMS01)

Vibration Characteristic Analysis of Drive Motor Considering Parameter Uncertainty

Lü Hui1,2,Shuai Jiang1,Zhengjun Wei1(),Yisha Cao3   

  1. 1.School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou  510641
    2.Guangxi University of Science and Technology,Guangxi Key Laboratory of Automobile Components and Vehicle Technology,Liuzhou  545006
    3.CRAT Test & Certification Company Ltd. ,Guangzhou  510530
  • Received:2022-10-26 Revised:2022-12-01 Online:2023-05-25 Published:2023-05-26
  • Contact: Zhengjun Wei E-mail:weizhj@scut.edu.cn

摘要:

针对电动车驱动电机中参数存在不确定性的复杂情形,提出了一种考虑参数混合不确定性的驱动电机振动特性分析方法。首先基于神经网络代理模型建立驱动电机的径向电磁力、转矩波动和齿槽转矩的响应模型;然后,采用混合不确定模型描述驱动电机的不确定参数,将信息充足的参数描述为随机变量而信息匮乏的参数描述为区间变量;接着,结合泰勒级数展开和中心差分法,推导了一种求解驱动电机振动特性混合不确定响应的泰勒级数展开-中心差分法(Taylor series expansion-central difference method, TSE-CDM);最后,为验证TSE-CDM的有效性,给出了一种蒙特卡洛法作为参考方法。对某驱动电机振动特性的算例分析表明:基于2D有限元模型和神经网络模型计算驱动电机振动特性,具有较高的计算精度和效率;TSE-CDM能够有效地求解驱动电机振动特性的混合不确定响应。

关键词: 驱动电机, 振动特性, 不确定性, 代理模型

Abstract:

To handle the complex situation of uncertain parameters of the drive motor of the electric vehicle, an analysis method for the vibration characteristics of the drive motor considering mixed parameter uncertainty is proposed. Firstly, the response models of the radial electromagnetic force, torque ripple and cogging torque of the drive motor are established based on the neural network surrogate model. Then, the uncertain parameters of drive motor are described by the mixed uncertainty model, where the uncertain parameters with sufficient information are described as random variables, while the uncertain parameters with limited information are described as interval variables. Next, the Taylor series expansion-central difference method( TSE-CDM) is derived to calculate the mixed uncertain responses of the vibration characteristics of drive motor through combining Taylor series expansion and central difference method.Finally, a Monte Carlo method is given as the reference method to verify the effectiveness of TSE-CDM. The numerical analysis results of a drive motor show that the vibration characteristics of the drive motor can be calculated efficiently and accurately based on the 2D finite element model and the neural network model; and the mixed uncertain responses of the vibration characteristics of the drive motor can be effectively solved by TSE-CDM.

Key words: drive motor, vibration characteristics, uncertainty, surrogate model