Analysis and Experimental Study of Transient NVH Characteristics of Electric Drive Assembly

被引：0
|
作者：
Huang X. [1 ]
Zheng G. [2 ]
Li X. [3 ]
Tang Y. [4 ]
机构：
[1] Railway Institute, Chongqing Industry and Information Vocational College, Chongqing
[2] Automobile Engineering College, Chongqing University of Technology, Chongqing
[3] Chongqing Deyin Technology Co., Ltd., Chongqing
[4] China Merchants Testing Vehicle Technology Research Institute Co., Ltd., Chongqing
来源：
Zhendong Ceshi Yu Zhenduan/Journal of Vibration, Measurement and Diagnosis | 2024年 / 44卷 / 03期
关键词：
electric drive assembly; multibody flexible dynamics; noise vibration and harshness (NVH) characteristics; transient;
D O I：
10.16450/j.cnki.issn.1004-6801.2024.03.018
中图分类号：
学科分类号：
摘要：
In this paper, a structural model of the electric drive assembly is constructed, and the electromagnetic force and bearing force are applied to analyze the transient vibration and noise of the electric drive system. First, through the two-dimensional transient field analysis of the permanent magnet synchronous motor, the concentrated electromagnetic force acting on the stalor teeth at the steady speed is obtained; And the multi body dynamics analysis is applied to obtain the bearing excitation force of the electric drive system under various steady speed conditions. Extract the main order excitation force of steady-speed condition is extracted, and the cubic spline interpolation method is used for obtaining the transient excitation force of each order. Then, the vibration and acoustic response analysis of the electric drive system under acceleration conditions are carried out. At the same time, test results at the semi anechoic chamber and simulation results are compared. Results show that the method of fitting transient excitation by cubic spline interpolation which considering electromagnetic excitation and mechanical excitation can effectively predict the transient noise vibration and harshness (NVH) characteristics of the electric drive system. © 2024 Nanjing University of Aeronautics an Astronautics. All rights reserved.
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页码：551 / 559and622
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