考虑参数不确定性的驱动电机振动特性分析

doi:10.19562/j.chinasae.qcgc.2023.05.014

Abstract

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

Lü Hui,Shuai Jiang,Zhengjun Wei,Yisha Cao. Vibration Characteristic Analysis of Drive Motor Considering Parameter Uncertainty[J].Automotive Engineering, 2023, 45(5): 845-853.

Figures/Tables 12

研究参数	初始值	研究范围
槽宽高 $H s 2$ /mm	29.5	［27，32］
槽口宽 $B s 0$ /mm	1.93	［1.7，2.2］
槽心宽 $B s 1$ /mm	5	［4.5，5.5］
永磁体厚度/mm	6.48	［6-7］
永磁体宽度/mm	32	［29，35］
气隙宽度t/mm	0.75	［0.7，0.8］
永磁体相对磁导率u	1.05	［1，1.2］
永磁体矫顽力 $H c$ /（kA·m^-1）	920	［820，1 000］

随机变量	均值	标准差
槽宽高 $H s 2$	29.5	0.24
槽口宽 $B s 0$	1.93	0.016
槽心宽 $B s 1$	5	0.042
永磁体厚度	6.48	0.054
永磁体宽度	32	0.27

区间变量	下界	上界
气隙宽度t/mm	0.71	0.79
永磁体相对磁导率u	1	1.1
永磁体矫顽力 $H c$ /（kA·m^-1）	874	966

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参数	数值
极数/槽数	8/48
额定转速/（r·min^-1）	3 000
额定转矩/（N·m）	240
相电流幅值/A	250
定子内/外径/mm	161.9/269
转子内/外径/mm	111/160.4
轴向长度/mm	84

振动特性	不确定响应	TSE-CDM	MCM	相对误差
径向电磁力密度峰值 F/（×10⁵N·m^-2）	E⁺（F）	9.76	9.75	0.10%
	E^-（F）	9.36	9.37	0.11%
	σ⁺（F）	0.023 7	0.022 6	4.87%
	σ^-（F）	0.018 7	0.018 9	1.06%
转矩波动W/%	E⁺（W）	29.1	28.9	0.69%
	E^-（W）	22.8	22.9	0.44%
	σ⁺（W）	0.42	0.41	2.44%
	σ^-（W）	0.13	0.14	7.14%
齿槽转矩峰值 T/（N·m）	E⁺（T）	1.67	1.66	0.60%
	E^-（T）	0.94	0.97	3.09%
	σ⁺（T）	0.046	0.045	2.22%
	σ^-（T）	0.026	0.027	3.70%

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Vibration Characteristic Analysis of Drive Motor Considering Parameter Uncertainty

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