分布式电动汽车驱动电机故障诊断与容错控制研究现状与发展趋势

Fault diagnosis and fault tolerant control for drive motor of distributed drive vehicles:current developments and future prospects

针对永磁电机故障诊断与驱动整车容错控制技术的发展现状和研究成果进行分析,从考虑电机绕组短路和永磁体退磁的故障角度,阐述了基于信号提取和智能辨识的典型诊断策略,梳理了不同诊断方法的技术难点;在整车容错控制方面,依据转矩转移、控制分配、智能控制等容错技术的适用场景,探讨了不同控制算法的逻辑架构及优缺点;展望了分布式电动汽车驱动电机故障诊断及容错控制关键技术的发展方向。

Thanks to their compact structures,efficient transmission,and flexible control,etc.,the distributed drive electric vehicles take the lead in the development of new energy electric vehicles.However,this redundant drive system is equipped with multiple actuators,making it prone to faults that easily disrupt the vehicle’s dynamic behaviors,thus affecting its safety and robustness.Therefore,the overall vehicle control with fault-tolerant techniques has gained extensive attention from scholars across the globe.This paper analyzes the recent developments and research achievements in motor fault diagnosis and vehicle fault-tolerant control techniques.From the perspective of faults that consider motor winding short circuit and permanent magnet demagnetization,the typical diagnostic strategies based on signal extraction and intelligent identification are explained,and the technical challenges associated with different diagnostic methods are summarized.Finally,we envison the development of key technologies related to fault diagnosis and fault-tolerant control for drive motors.