基于温度失效工况的分布式轮毂电动机驱动车辆容错控制  

Fault tolerant control of distributed hub motor driven vehicle based on temperature expiration condition

作　　者：付翔[1,2,3,4] 黄钰凯 孙录哲 张强辉 FU Xiang;HUANG Yukai;SUN Luzhe;ZHANG Qianghui(School of Automotive Engineering,Wuhan University of Technology,Wuhan,Hubei 430070,China;Hubei Key Laboratory of Advanced Technology for Automotive Components,Wuhan University of Technology,Wuhan,Hubei 430070,China;Hubei Collaborative Innovation Center for Automotive Components Technology,Wuhan University of Technology,Wuhan,Hubei 430070,China;Hubei Engineering Technology Research Center for New Energy and Intelligent Connected Vehicle,Wuhan University of Technology Wuhan,Hubei 430070,China)

机构地区：[1]武汉理工大学汽车工程学院,湖北武汉430070 [2]武汉理工大学现代汽车零部件技术湖北省重点实验室,湖北武汉430070 [3]武汉理工大学汽车零部件技术湖北省协同创新中心,湖北武汉430070 [4]武汉理工大学湖北省新能源与智能网联车工程技术研究中心,湖北武汉430070

出　　处：《江苏大学学报（自然科学版）》2023年第4期399-407,共9页Journal of Jiangsu University：Natural Science Edition

基　　金：武汉理工大学自主创新研究基金资助项目(107-3120620906)。

摘　　要：轮毂电动机驱动车辆各轮转矩独立可控,动力响应迅速,驱动系统冗余配置,在车辆动力学集成控制方面有显著优势,但其复杂的行驶工况和较高的功率需求容易使电动机发生温升故障,最终影响驱动效率.为了研究轮毂电动机温度故障诊断以及温度失效情况下的各轮转矩分配策略,保证整车稳定性及动力性,设计了模糊逻辑检测算法用于诊断电动机温度故障,提出温度失效因子量化表征轮毂电动机失效状态,根据期望速度和前轮转角计算纵、横向力需求,设计容错控制策略实现转矩重构优化分配.对所设计的算法进行实车试验验证.结果表明:故障诊断和处理策略能及时判断电动机失效状态并进行转矩重构分配,提高了行驶安全性,实现了整车动力性与稳定性的协调控制.Wheel torques of vehicles driven by hub motors are independently controllable with rapid dynamic response and redundant configuration of drive system,which have significant advantages in integrated vehicle dynamics control.However,the complex driving conditions and high power demand are likely to cause temperature-rise fault of the motor,which can ultimately affect driving efficiency.To investigate the temperature fault diagnosis of hub motor and the torque distribution strategy of each wheel under the temperature expiration condition,and ensure the stability and power performance of the vehicle,the fuzzy logic detection algorithm was designed to diagnose the temperature fault of the motor,and the temperature failure factor was proposed to quantify the failure state of the hub motor.The longitudinal and lateral force requirements were calculated according to the expected speed and front wheel angle,and the fault tolerant control strategy was designed to achieve the optimal distribution of torque reconstruction.The proposed algorithm was verified on a prototype vehicle.The results show that the fault diagnosis module and the solution strategy can judge the motor failure state in time and reconstruct the torque distribution,which improves the driving safety and achieves the coordinated control of the vehicle dynamics and stability.

关 键 词：轮毂电动机 驱动车辆 温度故障诊断 驱动失效 容错控制 转矩分配 

分 类 号：U461.7[机械工程—车辆工程]