Research on ABS control strategy of cornering braking of electric vehicle with four in-wheel-motors
by Kun Yang; Jinzhao Xiao; Di Tan; Chao Ma; Zhaoqiao Gao; Jilei Wang
International Journal of Vehicle Systems Modelling and Testing (IJVSMT), Vol. 17, No. 3/4, 2023

Abstract: To solve the problem of increased wheel inertia and significantly different wheel target slip rates during cornering braking of the electric vehicle with four-wheel-motors, the target slip rates were optimised by particle swarm algorithm, and a braking stability control strategy is proposed. The upper controller calculated the required compensating yaw moment and slip rate increment, the lower controller used a logic threshold value ABS control algorithm to control the wheel-braking force using three schemes: single-wheel control, single-side control, and no turn control applied, respectively. The control strategy was verified based on a condition with an initial speed of 90 km/h, a front wheel turning angle of 5.7°, and a braking deceleration of 8 m/s2. The simulation results show that it can adjust each wheel-braking force to produce compensating transverse moments to improve cornering braking stability. The single-side wheel control has better braking performance and cornering braking stability than the single-wheel control.

Online publication date: Wed, 13-Dec-2023

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