摘要
针对分布式驱动电动汽车(电动轮汽车)在复杂工况下紧急制动时易发生侧滑、甩尾和激转等问题,提出了电动轮汽车电液复合制动方向稳定性分层控制策略。该策略的决策层包含总制动转矩和修正横摆力矩的计算,分配层包含制动转矩最优分配和修正横摆力矩分配算法;协调层则对分配结果进行稳定协调。通过Simulink与Carsim联合仿真,分别对低附着路面转弯制动和对开路面紧急制动两种工况进行验证。结果表明,提出的分层控制策略在保证车辆制动效能的基础上,能有效地改善车辆制动时的方向稳定性。
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.
作者
马金麟
王新飞
张厚忠
江浩斌
徐兴
Ma Jinlin;Wang Xinfei;Zhang Houzhong;Jiang Haobin;Xu Xing(School of Automotive and Traffic Engineering,Jiangsu University,Zhenjiang 212013;Automotive Engineering Research Institute,Jiangsu University,Zhenjiang 212013)
出处
《汽车工程》
EI
CSCD
北大核心
2019年第3期320-326,339,共8页
Automotive Engineering
基金
江苏省重点研发计划竞争项目(BE2017129)
江苏省第十四批"六大人才高峰"高层次人才项目(JXQC-042)资助
关键词
电动轮
电液复合制动
方向稳定性
分层控制
electric-wheel vehicle
electro-hydraulic braking
directional stability
hierarchical control
