搭载行星减速器的纯电动客车振动试验研究

doi:10.19562/j.chinasae.qcgc.2021.01.017

Abstract

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

Bangji Zhang,Xiang Lin,Bohuan Tan,Shaohua Wang,Mengyuan Jin Qiutan Zeng. Experimental Study on Vibration of a Pure Electric Bus with a Planetary Gearbox[J].Automotive Engineering, 2021, 43(1): 129-135.

Figures/Tables 14

参数	频率	对应阶次	阶次
行星减速器啮合频率f_m	114n(t)	行星减速器啮合阶次O_m	114
行星架旋转频率f_c	n(t)	行星架旋转阶次O_c	1
太阳轮绝对转频 $f s (r)$	3.11n(t)	太阳轮绝对旋转阶次 $O s (r)$	3.11
太阳轮特殊频率Δf_s	1.11n(t)	太阳轮特殊阶次ΔO_s	1.11
行星轮绝对转频 $f p (r)$	4.8n(t)	行星轮绝对旋转阶次 $O p (r)$	4.80
主减速器啮合频率 $f m d$	8n(t)	主减速器啮合阶次 $O m d$	8
主减速器转频 $f d r$	0.18n(t)	主减速器旋转阶次 $O d r$	0.18

References 20

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项目	参数	行星减速客车	中央直驱客车
电机	额定功率/kW	100	100
	转矩/(N·m)	950	2 500
	质量/kg	139	246
	极/槽数	4/48	4/48
主减速器	主动轮齿数	8	8
主减速器	从动轮齿数	45	45
行星减速器	太阳轮齿数	54
	齿圈齿数	114
	行星轮齿数	30

传感器类型	传感器布置位置	测量参数
三向加速度传感器	驾驶员座椅导轨	三向振动加速度
	车内中部地板
	车内后部地板
	电机动力总成
	驱动桥壳体
光电传感器	行星减速器输出轴/电机输出轴	转速

试验工况
匀速工况	40km/h, 30km/h	达到测试速度后保持匀速
变速工况	急加速	起步后将油门踏板踩到底直至最高车速

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

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