Dynamic torque allocation for in-wheel motor driven vehicle based on energy consumption optimization

CHEN Hao; YUAN Liangxin; ZHENG Sifa; LIAN Xiaomin

doi:10.16511/j.cnki.qhdxxb.2019.22.041

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Journal of Tsinghua University(Science and Technology) ›› 2020, Vol. 60 ›› Issue (2) : 132-138. DOI: 10.16511/j.cnki.qhdxxb.2019.22.041

SPECIAL SECTION: ELECTRIC VEHICLE

Dynamic torque allocation for in-wheel motor driven vehicle based on energy consumption optimization

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Abstract

In-wheel motor driven vehicles can provide independent control of the driving torque to each wheel and easy access to feedback information. This paper presents a dynamic torque allocation method based on the torque vectoring control system of an in-wheel motor driven vehicle. The vehicle energy consumption is used as the objective function. Changes in the real-time capabilities of the motors and the driver's demands are used to build a constrained nonlinear optimization model. The optimization problem is decomposed into parts while the feasible torque space is discretized to resolve the contradiction between the constraint changes and the real-time requirement of the online optimization. A MATLAB/Simulink-Cruise simulation platform is used to verify the algorithm's feasibility and robustness for a new European driving cycle (NEDC) and an urban driving cycle. The simulations show that this method effectively reduces the vehicle energy consumption and has good fault tolerance.

Key words

in-wheel motor driven vehicle / dynamic torque allocation / energy consumption optimization / torque feasible space

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CHEN Hao, YUAN Liangxin, ZHENG Sifa, LIAN Xiaomin. Dynamic torque allocation for in-wheel motor driven vehicle based on energy consumption optimization[J]. Journal of Tsinghua University(Science and Technology). 2020, 60(2): 132-138 https://doi.org/10.16511/j.cnki.qhdxxb.2019.22.041

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