Multi-step torque distribution for an over-actuated electric vehicle
by Houhua Jing; Zhiyuan Liu; Haifeng Liu
International Journal of Vehicle Design (IJVD), Vol. 82, No. 1/2/3/4, 2020

Abstract: The over-actuated electric vehicle can flexibly adjust the torque of four wheels, to improve operational efficiency and vehicle motion performance. A multi-step torque distribution strategy is proposed, which can comprehensively consider the energy optimisation, vehicle stability and actuator dynamics, and realise the comprehensive control of longitudinal and lateral motion. It is composed of a static control allocation for energy optimisation, and a dynamic control allocation for manoeuvrability and stability enhancement based on model predictive control. It does not rely on complex online optimisation and is adaptive to highlight energy-saving, motion performance or stability under various scenarios. Finally, the controller is validated using a high-fidelity simulator called veDYNA.

Online publication date: Thu, 01-Apr-2021

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