四轮毂电机电动车对开路面制动能量回收策略研究  

Research on the Control Strategy of Braking Energy Recovery on Bisectional Road for Electric Vehicle with Four In-Wheel Motors

作　　者：杨坤[1,2] 肖锦钊 王杰 马超[1] 秦志昌[1] 杨富春 YANG Kun;XIAO Jinzhao;WANG Jie;MA Chao;Qin Zhichang;YANG Fuchun(School of Transportation&Vehicle Engineering,Shandong University of Technology,Zibo 255000,China;Shandong Yiwei Automobile Technology Co.,Ltd.,Zibo 255000,China)

机构地区：[1]山东理工大学交通与车辆工程学院,山东淄博255000 [2]山东意威汽车科技有限公司,山东淄博255000

出　　处：《重庆理工大学学报（自然科学）》2021年第5期58-64,共7页Journal of Chongqing University of Technology：Natural Science

基　　金：国家自然科学基金项目(51605265);山东省重点研发计划项目(2018GGX105010);山东省自然科学基金项目(ZR2015PE020)。

摘　　要：以对开路面下四轮毂电机电动汽车制动能量回收控制策略为研究对象,以提高对开路面下的制动能量回收效率和制动能量回收时的制动稳定性为目标,考虑制动强度对制动能量回收效率的影响及对开路面对制动稳定性的影响,提出了当两前轮轮毂电机制动力大于制动需求时,仅由两前轮轮毂电机提供制动力,反之,由4个轮毂电机共同提供制动力,对开路面下制动时,依据两侧路面附着系数分配左、右轮制动力的控制策略;基于Matlab/Simulink搭建了制动能量回收控制模型,基于FTP-75工况及对开路面工况,分别对制动能量回收有效性及制动稳定性进行验证,仿真结果表明:一次FTP-75工况下,采用所提的控制策略能够回收0.132 kW·h的能量,相对于2个轮毂电机、4个轮毂电机按固定比例提供制动力的控制策略分别提高23.3%、7.3%;在对开路面制动时能够缩小两侧车轮地面制动力的差值,减小车辆横摆力矩,有效提高汽车制动稳定性。Taking the braking energy recovery control strategy on bisectional road for electric vehicle with four in-wheel motors as the research object,in order to improve the braking energy recovery efficiency and braking stability of braking energy recovery on bisectional road,considering the influence of braking strength on braking energy recovery efficiency and the influence of bisectional road on braking stability,the paper proposes that only two front in-wheel motors providing the braking force when the braking force of the two front in-wheel motors can meet the braking demand,four inwheel motors providing the braking force together when the braking force of the two front in-wheel motors can’t meet the braking demand,and the braking force of the left and right wheels is distributed according to the road adhesion coefficient on both sides of the wheel.Based on Matlab/Simulink,the control model for braking energy recovery is built.Based on FTP-75 driving cycle and bisectional road,the effectiveness of braking energy recovery and braking stability are verified.The simulation results show that under one FTP-75 driving cycle,the proposed control strategy can recover0.132 kW·h power,which is 23.3%and 7.3%higher than that of the control strategy with two inwheel motors and four in-wheel motors providing braking force in fixed proportion.When braking on bisectional road,the difference of braking force on both sides of the wheel and the yaw moment of the vehicle can be reduced,and the braking stability of vehicle can be improved effectively.

关 键 词：轮毂电机电动汽车 制动能量回收 对开路面 制动稳定性 控制策略 

分 类 号：U463.5[机械工程—车辆工程]