Dynamic characteristics of a three-speed uninterrupted powertrain AMT

doi:10.16511/j.cnki.qhdxxb.2020.22.020

Please wait a minute...

Abstract
Figures/Tables
References
Related Articles
Metrics

Download: PDF(7456 KB)
Export: BibTeX | EndNote | Reference Manager | ProCite | RefWorks

Abstract

This study analyzes the dynamic characteristics of a three-speed uninterrupted powertrain automatic mechanical transmission (AMT) for an electric bus. The AMT structure reduces the power interruption during shifting. A Lagrange equation is developed for the three-speed uninterrupted powertrain AMT that includes the target vehicle performance characteristics. The model is solved in MATLAB/Simulink to compare the performance characteristics of the target vehicle with this three-speed uninterrupted powertrain AMT and without a transmission with simulations of the entire acceleration and deceleration ranges of the target vehicle. The model predicts the clutch and brake torque curves during shifting and predicts the drive motor input torque and final output torque. The dynamic equations are also used to verify the feasibility of power recovery during shifting. The results show that the three-speed uninterrupted powertrain AMT improves the vehicle dynamics of electric buses and maintains power during shifting.

Keywords pure electric bus uninterrupted powertrain three-speed automatic mechanical transmission (AMT) dynamic characteristics

Corresponding Authors: Jian SONG E-mail: daesj@tsinghua.edu.cn

Issue Date: 26 November 2020

	Service

	E-mail this article
	E-mail Alert
	RSS
	Articles by authors

	Fei LI
	Jian SONG
	Shengnan FANG
	Haijun SONG
	Truong Sinh NGUYEN

Cite this article:

Fei LI,Jian SONG,Shengnan FANG, et al. Dynamic characteristics of a three-speed uninterrupted powertrain AMT[J]. Journal of Tsinghua University(Science and Technology), 2021, 61(1): 1-10.

URL:

http://jst.tsinghuajournals.com/EN/10.16511/j.cnki.qhdxxb.2020.22.020 OR http://jst.tsinghuajournals.com/EN/Y2021/V61/I1/1

换挡执行机构工作状态


10.16511/j.cnki.qhdxxb.2020.22.020.T001表 1

挡位	制动器	二挡离合器	三挡离合器
一挡	接合	分离	分离
二挡	分离	接合	分离
三挡	分离	分离	接合

10.16511/j.cnki.qhdxxb.2020.22.020.T002

表 2

10.16511/j.cnki.qhdxxb.2020.22.020.T003

表 3

10.16511/j.cnki.qhdxxb.2020.22.020.T004

表 4

10.16511/j.cnki.qhdxxb.2020.22.020.T005

表 5

安装动力保持型三挡AMT前后动力性指标对比

	最大爬坡度/%	最高车速/(km·h^-1)	0~50 km/h的加速时间/s
未安装变速器	13	92	15
安装三挡AMT	24	100	13
改善比例/%	85	8.7	13

10.16511/j.cnki.qhdxxb.2020.22.020.T006

表 6

动力保持型三挡AMT换挡点

挡位切换	升挡点/(km·h^-1)	降挡点/(km·h^-1)
一挡、二挡	30	25
二挡、三挡	60	55

1	宋健,李飞,李锐,等.一种复合轮系动力保持型三挡自动变速器: ZL201510228009.2[P]. 2015-05-07.
1	SONG J, LI F, LI R, et al. Three-speed uninterrupted powertrain automatic mechanical transmission based on composite wheel train: ZL201510228009.2[P]. 2015-05-07. (in Chinese)
3	周晶晶.纯电动汽车两挡自动变速器试验与仿真[D].长沙:湖南大学, 2014.
3	ZHOU J J. Gearshift dynamics simulation in two-speed AMT of pure electric vehicle[D]. Changsha: Hunan University, 2014. (in Chinese)
4	吉毅.纯电动汽车用AMT参数设计及换挡控制策略优化[D].重庆:重庆大学, 2014.
4	JI Y. Parameter design and shifting control strategy optimization of AMT for pure electric vehicle[D]. Chongqing: Chongqing University, 2014. (in Chinese)
5	朱虹燃.纯电动汽车两挡自动变速器的研究开发[D].青岛:青岛大学, 2014.
5	ZHU H R. Design of two-speed AMT for pure electric vehicle[D]. Qingdao: Qingdao University, 2014. (in Chinese)
6	LIANG Q , GAO B Z , CHEN H . Gear shifting control for pure electric vehicle with inverse-AMT[J]. Applied Mechanics and Materials, 2012. 190-191, 1286- 1289. doi: 10.4028/www.scientific.net/AMM.190-191.1286
7	FANG S N , SONG J , SONG H J , et al. Design and control of a novel two-speed uninterrupted mechanical transmission for electric vehicles[J]. Mechanical Systems and Signal Processing, 2016. 75, 473- 493. doi: 10.1016/j.ymssp.2015.07.006
9	孙少华.纯电动客车机械式自动变速器换挡综合控制技术研究[D].长春:吉林大学, 2014.
9	SUN S H. Research on shift integrated control technology for automated manual transmission in pure electric bus[D]. Changchun: Jilin University, 2014. (in Chinese)
10	XI J Q, XIONG G M, ZHANG Y. Application of automatic manual transmission technology in pure electric bus[C]//Proceedings of 2008 IEEE Vehicle Power and Propulsion Conference. Harbin, China, 2008.
11	MOUSAVI M S R, PAKNIYAT A, BOULET B. Dynamic modeling and controller design for a seamless two-speed transmission for electric vehicles[C]//Proceedings of 2014 IEEE Conference on Control Applications. Juan Les Antibes, France, 2014: 635-640.
12	SORNIOTTI A, BOSCOLO M, TURNER A, et al. Optimization of a multi-speed electric axle as a function of the electric motor properties[C]//Proceedings of 2010 IEEE Vehicle Power and Propulsion Conference. Lille, France, 2010: 1-6.
13	HONG S , SON H , LEE S , et al. Shift control of a dry-type two-speed dual-clutch transmission for an electric vehicle[J]. Proceedings of the Institution of Mechanical Engineers, Part D:Journal of Automobile Engineering, 2016. 230 (3): 308- 321. doi: 10.1177/0954407015585686
14	GUO L L , GAO B Z , CHEN H . Online shift schedule optimization of 2-speed electric vehicle using moving horizon strategy[J]. IEEE/ASME Transactions on Mechatronics, 2016. 21 (6): 2858- 2869. doi: 10.1109/TMECH.2016.2586503
17	宋勇道.基于两档双离合器自动变速器的纯电动汽车驱动与换档控制技术研究[D].长春:吉林大学, 2013.
17	SONG Y D. Research on drive and shift control technology for electric vehicle with two-speed dual clutch transmission[D]. Changchun: Jilin University, 2013. (in Chinese)

[1]	FENG Rui, LIU Yu, ZHANG Zhang, HE Qingsong, WU Zhuo, TENG Haishan, JIA He. Numerical study on the aerodynamics of a rocket fairing half in the continuum regime of the reentry process[J]. Journal of Tsinghua University(Science and Technology), 2023, 63(3): 414-422.
[2]	ZHANG Qingsong, JIA Shan, CHEN Jinbao, XU Yingshan, SHE Zhiyong, CAI Chengzhi, PAN Yihua. Configuration design and topology optimization of a single wing for the hybrid unmanned aerial vehicle[J]. Journal of Tsinghua University(Science and Technology), 2023, 63(3): 423-432.
[3]	ZHAO Tong, GUO Junjie, LÜ Yuhong. Nonlinear dynamic characteristics of bolted joints for various pretension forces[J]. Journal of Tsinghua University(Science and Technology), 2019, 59(9): 772-779.
[4]	YAO Yina, LI Cong, TAO Zhenxiang, YANG Rui. Experimental study of the dynamic characteristics of an oblique impact of a water droplet[J]. Journal of Tsinghua University(Science and Technology), 2019, 59(2): 129-134.
[5]	Yan DENG,Chao XING,Rong ZHANG,Bin ZHOU. Rapid testing of the dynamic characteristics of MEMS gyroscope chips[J]. Journal of Tsinghua University(Science and Technology), 2014, 54(6): 811-814.

Viewed

Full text

Abstract

Cited

Shared

Discussed

原厂主减速器	动力保持型三挡AMT
主减速比	挡位	变速器传动比	主减速比
	一挡	2.745 1
6.166	二挡	1.7	4.133
	三挡	1