汽车工程 ›› 2021, Vol. 43 ›› Issue (1): 129-135.doi: 10.19562/j.chinasae.qcgc.2021.01.017

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搭载行星减速器的纯电动客车振动试验研究

张邦基,林祥,谭博欢(),王少华,曾梦媛,金秋谈   

  1. 湖南大学,汽车车身先进设计制造国家重点实验室,长沙   410082
  • 收稿日期:2020-04-05 修回日期:2020-08-21 出版日期:2021-01-25 发布日期:2021-02-03
  • 通讯作者: 谭博欢 E-mail:bohuan_tan@hnu.edu.cn
  • 基金资助:
    国家自然科学基金(5187051675);湖南省自然科学基金(2020JJ5079)

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

Bangji Zhang,Xiang Lin,Bohuan Tan(),Shaohua Wang,Mengyuan Jin Qiutan Zeng   

  1. Hunan University,State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body,Changsha 410082
  • Received:2020-04-05 Revised:2020-08-21 Online:2021-01-25 Published:2021-02-03
  • Contact: Bohuan Tan E-mail:bohuan_tan@hnu.edu.cn

摘要:

行星减速器为车辆传动系统提供期望传动比的同时,对车辆振动舒适性也会产生特定的影响。本文针对某搭载行星减速器的纯电动客车进行实车振动试验,综合应用计权均方根加速度评价、频谱分析、常相干分析和阶次分析的方法,探讨整车振动特性;与中央直驱式纯电动客车进行对比分析,评价行星减速器对纯电动客车振动舒适性的影响。结果表明,纯电动客车搭载行星减速器改善了驱动电机工作状态,从而显著提高了车内后部振动舒适性;行星减速器太阳轮偏心导致车内中部振动信号中出现以行星架转频为调制频率的调制边带,一定程度上影响了车内中部振动舒适性。

关键词: 纯电动客车, 行星减速器, 试验研究, 振动特性, 振动舒适性

Abstract:

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.

Key words: pure electric bus, planetary gearbox, experimental study, vibration characteristics, vibration comfort