发动机制动
再生制动器
临界制动
汽车工程
电子制动力分配系统
缓速器
动态制动
卡车
控制理论(社会学)
工程类
能量回收
制动斩波器
扭矩
计算机科学
能量(信号处理)
制动器
电压
控制(管理)
制动系统
电气工程
统计
物理
数学
人工智能
热力学
作者
Xuebo Li,Jian Ma,Xuan Zhao,Lu Wang
摘要
Regenerative braking can extend the driving range and reduce PM emissions from abrasion for battery electric heavy-duty trucks (BETs). The composite braking control strategy including torque distribution and dynamic coordinated control for the four-axle BET equipped with the electromechanical braking system is studied. A segmented torque distribution strategy is proposed to maximize energy recovery while ensuring braking stability. The simulation results reveal that the strategy shows better comprehensive braking performance than the two benchmark strategies, and the energy recovery rate in different load states under CHTC-D is above 40%. The proposed coordinated control strategy takes advantage of regenerative braking’s rapid response and precise control to compensate for torque deviations caused by the hysteresis of friction braking. For two common braking mode transition conditions, regenerative braking torque correction and advance of the mode switching timing are adopted to enable the motor to obtain the torque compensation ability. This method leads to a slight loss of braking energy, and the maximum torque deviation during the mode switching process is suppressed to less than 1.4 kN·m, and the jerk and braking distance is reduced accordingly, which is of great importance in improving driving comfort and braking safety.
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