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Energies 2017, 10(11), 1684; https://doi.org/10.3390/en10111684

Torque Coordination Control during Braking Mode Switch for a Plug-in Hybrid Electric Vehicle

1
State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044, China
2
School of Automotive Engineering, Chongqing University, Chongqing 400044, China
*
Author to whom correspondence should be addressed.
Received: 15 September 2017 / Revised: 13 October 2017 / Accepted: 16 October 2017 / Published: 25 October 2017
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Abstract

Hybrid vehicles usually have several braking systems, and braking mode switches are significant events during braking. It is difficult to coordinate torque fluctuations caused by mode switches because the dynamic characteristics of braking systems are different. In this study, a new type of plug-in hybrid vehicle is taken as the research object, and braking mode switches are divided into two types. The control strategy of type one is achieved by controlling the change rates of clutch hold-down and motor braking forces. The control strategy of type two is achieved by simultaneously changing the target braking torque during different mode switch stages and controlling the motor to participate in active coordination control. Finally, the torque coordination control strategy is modeled in MATLAB/Simulink, and the results show that the proposed control strategy has a good effect in reducing the braking torque fluctuation and vehicle shocks during braking mode switches. View Full-Text
Keywords: Hybrid Electric Vehicle (HEV); braking; mode switch; coordinated control; ride comfort Hybrid Electric Vehicle (HEV); braking; mode switch; coordinated control; ride comfort
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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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Yang, Y.; Wang, C.; Zhang, Q.; He, X. Torque Coordination Control during Braking Mode Switch for a Plug-in Hybrid Electric Vehicle. Energies 2017, 10, 1684.

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