电动轮汽车电液复合制动方向稳定性分层控制*

doi:10.19562/j.chinasae.qcgc.2019.03.012

Abstract

Abstract: For the problems of sideslipping, drift and spinning in emergency braking of distributed drive electric vehicles in complicated working conditions, a hierarchical control strategy enhancing the braking stability of EVs with electro-hydraulic composite braking is proposed. The decision-making level of this strategy includes the calculation of total braking torque and corrected yawing moment; the allocation layer contains the algorithm of optimal allocation of braking torque and allocation of corrected yawing moment; the coordination layer coordinates the distribution results ensuring the stability. With the vehicle dynamics simulation platform of Simulink & Carsim, braking in μ-lowturn test and μ-split road are simulated and tested respectively. The results show that the proposed hierarchical control strategy can not only guarantee the braking effectiveness,but also improve the stability of the braking of vehicle

Key words: electric-wheel vehicle, electro-hydraulic braking, directional stability, hierarchical control

Ma Jinlin, Wang Xinfei, Zhang Houzhong, Jiang Haobin & Xu Xing. A Study on Hierarchical Control of Directional Stability of Electric-wheel Vehicle with Electro-hydraulic Braking[J]., 2019, 41(3): 320-326.

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A Study on Hierarchical Control of Directional Stability of Electric-wheel Vehicle with Electro-hydraulic Braking

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