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Energies 2017, 10(9), 1362; https://doi.org/10.3390/en10091362

Enumerative Optimization Procedure for the Gear Train Optimization Problem of a Two-Speed Dedicated Electric Transmission

1,2,3
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1,2,3
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1,2,3
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1,2,3,* and 1,2,3
1
School of Transportation Science and Engineering, Beihang University, 37 Xueyuan Road, Haidian District, Beijing 100191, China
2
Beijing Key Laboratory for High-Efficient Power Transmission and System Control of New Energy Resource Vehicle, Beihang University, 37 Xueyuan Road, Haidian District, Beijing 100191, China
3
DYNAVOLT TECH. and Beihang University Joint Lab for New Energy Resource Vehicle Transmission Technology, Beihang University, 37 Xueyuan Road, Haidian District, Beijing 100191, China
*
Author to whom correspondence should be addressed.
Received: 22 July 2017 / Revised: 27 August 2017 / Accepted: 5 September 2017 / Published: 8 September 2017
(This article belongs to the Special Issue Methods to Improve Energy Use in Road Vehicles)
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Abstract

Gear train optimization problems (GTOPs) can be very difficult. This paper proposes an enumerative optimization procedure (EOP) for the GTOP of a two-speed dedicated electric transmission (2DET) for electric vehicles (EVs). The EOP combines enumeration with the Min-Max Principle of Optimality (MMPO). First, the requirements of the EV and the requirements of manufacture and operation were checked in a dedicated order to obtain the feasible region of the GTOP. Then, the MMPO was implemented within the feasible region to reveal the global optimum in terms of the performance of the EV, the load capacity of the gears and the size of the gear train (GT). Results demonstrated that the EOP was effective in determining the feasible region and simultaneously and globally optimizing multiple criteria for the GTOP. The idea of combining enumeration with optimization, as the EOP presents, may be helpful to solve other GTOPs and provide global optima that are immediately practical and applicable. View Full-Text
Keywords: gear train optimization problem (GTOP); enumerative optimization procedure (EOP); two-speed dedicated electric transmission (2DET); electric vehicle (EV); Min-Max Principle of Optimality (MMPO) gear train optimization problem (GTOP); enumerative optimization procedure (EOP); two-speed dedicated electric transmission (2DET); electric vehicle (EV); Min-Max Principle of Optimality (MMPO)
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Xu, X.; Chen, Z.; Liu, Y.; Dong, P.; Liu, Y. Enumerative Optimization Procedure for the Gear Train Optimization Problem of a Two-Speed Dedicated Electric Transmission. Energies 2017, 10, 1362.

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