The invention provides a fault diagnosis method for a distributed hub motor driving system, which comprises the steps of processing a motor torque signal by adopting first-order inertia filtering, andacquiring the motor torque signal from a hub motor controller in real time; calculating and detecting characteristic values respectively, setting a specific threshold value in each torque failure fault detection process, and judging whether the motor torque signal has a fault or not and obtaining fault information by comparing each characteristic value with the corresponding threshold value, wherein the characteristic values comprise a motor torque signal distortion characteristic value, a motor torque signal abrupt change characteristic value and a motor torque signal gain characteristic value; and carrying out integrated identification on the obtained fault information and outputting a motor torque fault code to determine that the motor has a fault. According to the method, the motor torque failure fault of a distributed hub motor driven vehicle can be effectively identified, the real-time diagnosis function of different motor torque failure modes is realized, and the method is usedfor improving the driving safety of the vehicle.
本发明提供一种分布式轮毂电机驱动系统故障诊断方法,采用一阶惯性滤波处理电机转矩信号,然后从轮毂电机控制器中实时采集电机转矩信号;分别对特征值进行计算检测,同时设定各转矩失效故障检测过程中具体的门限值,通过比较各特征值与对应的门限值的大小,判定电机转矩信号是否发生故障并得出故障信息;所述的特征值包括电机转矩信号失真特征值、电机转矩信号突变特征值以及电机转矩信号增益特征值;对得到的故障信息进行集成化识别并输出电机转矩故障码,确定电机存在故障。本发明能够有效识别分布式轮毂电机驱动车辆发生的电机转矩失效故障,实现不同电机转矩失效模式的实时诊断功能,用于提高车辆驾驶安全性。
Fault diagnosis method for distributed hub motor driving system
一种分布式轮毂电机驱动系统故障诊断方法
2020-06-12
Patent
Electronic Resource
Chinese
IPC: | B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES |
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