无人驾驶纯电动汽车制动扭矩分配控制方法  

A Torque Distribution Control Method for Driverless Electric Vehicle

作　　者：王晶[1] 李玮 Wang Jing;Li Wei(Langfang Polytechnic Institute,Department of Mechanical and Electrical Engineering,Hebei Langfang 065000;Beijing Electric Vehicle CO.,Ltd.,Engineering Research Institute,Beijing 100176)

机构地区：[1]廊坊职业技术学院机电工程系,河北廊坊065000 [2]北京新能源汽车股份有限公司工程研究院,北京100176

出　　处：《汽车实用技术》2020年第9期49-52,共4页Automobile Applied Technology

基　　金：廊坊市科技项目(2019011017)资助。

摘　　要：文章提出了一种无人驾驶纯电动汽车制动扭矩分配控制方法。该方法首先根据动力电池、驱动电机状态以及整车状态计算驱动电机最大能量回收扭矩,并在此基础上进行需求制动扭矩分配;接下来创造性的将电机系统引入到制动控制系统中,充分考虑了液压制动系统由于温度(如热衰减)、部件机械特性以及环境等影响其输出制动力矩稳定性与准确性的因素,通过电机能量回收所产生的制动扭矩对此进行补偿,保证最终车辆制动过程中所产生的负向加速度与需求保持一致。最后通过实车实验,验证了该方法的可行性与可靠性。This paper presents a torque distribution control method for driverless pure electric vehicle.This method first calculates the maximum energy recovery torque of the driving motor according to the status of the power battery,the driving motor and the vehicle,and then distributes the required braking torque;then creatively introduces the motor system into the braking control system,fully considering the transmission of the hydraulic pressing system due to the influence of temperature(such as heat attenuation),mechanical characteristics of components and environment factors of stability and accuracy of braking torque are given.The braking torque generated by motor energy recovery is compensated to ensure that the negative acceleration generated in the final vehicle braking process is consistent with the demand.Finally,the feasibility and reliability of the method are verified by the real vehicle experiment.

关 键 词：纯电动汽车 无人驾驶 制动 能量回收 

分 类 号：U469.72[机械工程—车辆工程]