Experimental Study on Vibration of a Pure Electric Bus with a Planetary Gearbox

被引：0
|
作者：
Zhang B. [1 ]
Lin X. [1 ]
Tan B. [1 ]
Wang S. [1 ]
Zeng M. [1 ]
Jin Q. [1 ]
机构：
[1] Hunan University, State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Changsha
来源：
Qiche Gongcheng/Automotive Engineering | 2021年 / 43卷 / 01期
关键词：
Experimental study; Planetary gearbox; Pure electric bus; Vibration characteristics; Vibration comfort;
D O I：
10.19562/j.chinasae.qcgc.2021.01.017
中图分类号：
学科分类号：
摘要：
The planetary gearbox can provide a desired transmission ratio for the vehicle transmission system,whereas it affects the vibration characteristics of the vehicle. In this paper, the vibration test of an electric bus equipped with a planetary gearbox is carried out to study the vehicle vibration characteristics by methods of weighted acceleration root-mean-square evaluation, frequency spectrum analysis, coherent analysis and order analysis. After that, the comparative analysis with the central direct drive electric bus is conducted to evaluate the impact of planetary gearbox on the vibration comfort of the electric bus. The results indicate that equipping a gearbox helps the motor to achieve optimal working condition, which significantly improves the vibration comfort of the rear interior of the bus. However, the sun gear eccentric leads to a modulation sideband in the vibration signal of the middle interior of the bus, whose modulation frequency is the rotation frequency of the planet carrier, which affects the vibration comfort of the middle part of the bus to some extent. © 2021, Society of Automotive Engineers of China. All right reserved.
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页码：129 / 135and151
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