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

Yang Yang, Chao Wang, Quanrang Zhang and Xiaolong He
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Yang Yang: State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044, China
Chao Wang: School of Automotive Engineering, Chongqing University, Chongqing 400044, China
Quanrang Zhang: School of Automotive Engineering, Chongqing University, Chongqing 400044, China
Xiaolong He: School of Automotive Engineering, Chongqing University, Chongqing 400044, China

Energies, 2017, vol. 10, issue 11, 1-16

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.

Keywords: Hybrid Electric Vehicle (HEV); braking; mode switch; coordinated control; ride comfort (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2017
References: View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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