Coordinated Control for Mode-shift of Dual-motor Coupling Powertrain

doi:10.3901/JME.2017.14.059

Abstract

Abstract: Dual-motor coupling powertrain (DMCP) is a kind of novel motor powertrain which can extend range of EV (electric vehicle). Nevertheless, complicated complicated structure and multiple drive modes exist in the DMCP. The different mode-shift process may lead to the output torque fluctuation in DMCP as well as a biggish vehicle jerk. Based on the analysis of the structure, the jerk value and kinetics relationship of the torque coupling process and signal motor process are analyzed. The mode-shift process from single motor to torque coupling is analyzed. The control strategy are established with the detail facing-forward transmission simulation model developed using Matlab\Simulink. The result shows that the mode-shift process from single motor to torque coupling limited jerk value less than 2.5 m/s³, without a dynamic power interruption. The control strategy can improve the ride comfort of the DMCP during the mode-switch process.

Key words: control strategy, coupling powertrain, dual-motor, jerk, mode-shift

CLC Number:

TG156

HU Minghui, CHEN Shuang, ZENG Jianfeng. Coordinated Control for Mode-shift of Dual-motor Coupling Powertrain[J]. Journal of Mechanical Engineering, 2017, 53(14): 59-67.

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