Optimal coordinating gearshift control of a two-speed transmission for battery electric vehicles

Tian, Y; Yang, H; Mo, W; Zhou, S; Zhang, N; Walker, PD

Optimal coordinating gearshift control of a two-speed transmission for battery electric vehicles

Tian, Y Yang, H

Mo, W

Zhou, S

Zhang, N

Walker, PD

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Publisher:: Academic Press
Publication Type:: Journal Article
Citation:: Mechanical Systems and Signal Processing, 2020, 136, pp. 106521
Issue Date:: 2020

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Field	Value	Language
dc.contributor.author	Tian, Y
dc.contributor.author	Yang, H https://orcid.org/0000-0002-4987-5794
dc.contributor.author	Mo, W https://orcid.org/0000-0002-4683-7856
dc.contributor.author	Zhou, S https://orcid.org/0000-0001-5070-141X
dc.contributor.author	Zhang, N https://orcid.org/0000-0001-6408-0044
dc.contributor.author	Walker, PD
dc.date.accessioned	2021-03-22T05:56:27Z
dc.date.available	2021-03-22T05:56:27Z
dc.date.issued	2020
dc.identifier.citation	Mechanical Systems and Signal Processing, 2020, 136, pp. 106521
dc.identifier.issn	0888-3270
dc.identifier.issn	1096-1216
dc.identifier.uri	http://hdl.handle.net/10453/147435
dc.description.abstract	© 2019 Elsevier Ltd With the sustained technology advancement in the power battery, battery electric vehicles (BEVs) are considered as the most advisable alternatives of their internal combustion engine (ICE) counterparts. Research reveals that the implementation of multispeed transmissions for BEVs can reduce the vehicle energy consumption, improve the vehicle dynamic performance and downsize the battery package and the driving motor volume. Considering the potential advantages of multispeed transmissions equipped BEVs, this paper presents an investigation into the optimal coordinating gearshift control of a seamless two-speed transmission for BEVs. Firstly, to achieve the gearshift transient behaviour, the mathematical model of the powertrain system is established. Next, model-based gearshift tactics are proposed for the torque phase and the inertia phase respectively. Subsequently, the proposed control tactics based optimal controllers are developed to achieve high-quality gearshift in the whole gear shifting process. To be more specific, in the torque phase, the controller aims at optimising dual objectives together, namely the vehicle jerk and friction work, and the control objective of the inertia phase only focuses on decreasing the friction work due to the coordinating gear shifting tactic. Finally, based on available sensor signals, sliding mode observers are employed to estimate unmeasurable torque as feedback information for the optimal controllers in different gear states. Simulation results demonstrate that the devised control approaches can promote gear change performance comprehensively.
dc.language	English
dc.publisher	Academic Press
dc.relation	http://purl.org/au-research/grants/arc/DP150102751
dc.relation.ispartof	Mechanical Systems and Signal Processing
dc.relation.isbasedon	10.1016/j.ymssp.2019.106521
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0905 Civil Engineering, 0913 Mechanical Engineering, 0915 Interdisciplinary Engineering
dc.subject.classification	Acoustics
dc.title	Optimal coordinating gearshift control of a two-speed transmission for battery electric vehicles
dc.type	Journal Article
utslib.citation.volume	136
utslib.for	0902 Automotive Engineering
utslib.for	0913 Mechanical Engineering
utslib.for	0905 Civil Engineering
utslib.for	0913 Mechanical Engineering
utslib.for	0915 Interdisciplinary Engineering
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Students
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Mechanical and Mechatronic Engineering
utslib.copyright.status	closed_access	*
dc.date.updated	2021-03-22T05:56:16Z
pubs.publication-status	Published
pubs.volume	136

Abstract:

© 2019 Elsevier Ltd With the sustained technology advancement in the power battery, battery electric vehicles (BEVs) are considered as the most advisable alternatives of their internal combustion engine (ICE) counterparts. Research reveals that the implementation of multispeed transmissions for BEVs can reduce the vehicle energy consumption, improve the vehicle dynamic performance and downsize the battery package and the driving motor volume. Considering the potential advantages of multispeed transmissions equipped BEVs, this paper presents an investigation into the optimal coordinating gearshift control of a seamless two-speed transmission for BEVs. Firstly, to achieve the gearshift transient behaviour, the mathematical model of the powertrain system is established. Next, model-based gearshift tactics are proposed for the torque phase and the inertia phase respectively. Subsequently, the proposed control tactics based optimal controllers are developed to achieve high-quality gearshift in the whole gear shifting process. To be more specific, in the torque phase, the controller aims at optimising dual objectives together, namely the vehicle jerk and friction work, and the control objective of the inertia phase only focuses on decreasing the friction work due to the coordinating gear shifting tactic. Finally, based on available sensor signals, sliding mode observers are employed to estimate unmeasurable torque as feedback information for the optimal controllers in different gear states. Simulation results demonstrate that the devised control approaches can promote gear change performance comprehensively.

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http://hdl.handle.net/10453/147435