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23권 6호 1593-1608 2022 [IJAT]

분야 Chassis
언어 English
저자 Feng Yang(Hubei University of Automotive Technology), Xin Chen(Hubei University of Automotive Technology), Dong Guo(Hubei University of Automotive Technology), Mingmao Hu(Hubei University of Automotive Technology), Ziwen Liao(Hubei University of Automotive Technology), Zhongcheng Fu(Hubei University of Automotive Technology), Qingshan Gong(Hubei University of Automotive Technology)
Key Words Wheel motors, Electric-hydraulic ABS, Optimal control, Brake torque distribution, Fuzzy control
초록 An anti-lock control strategy for electric-hydraulic compound braking is proposed to improve the emergency braking safety of a hub motor electric vehicle. Based on the half-vehicle braking longitudinal dynamics model, the optimal control is solved to obtain the total braking torque corresponding to each wheel. A fuzzy algorithm is used to determine the proportion coefficient of the motor based on the battery state of charge coefficient (SOC) and the motor speed constraints on the motor braking, and the total braking torque is distributed. The hydraulic and motor braking torques obtained from the allocation are input as reference values to the electric-hydraulic compound braking system, and the output braking torque is fed back into the CarSim vehicle model. The proposed electric-hydraulic compound ABS control strategy is also validated in the co-simulation of CarSim and MATLAB/Simulink on high, medium and low adhesion road surfaces.
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