基于信号分析的纯电动客车失效调查方法  

Failure investigation method for pure electric bus based on signal processing

作　　者：孙晓强[1] 胡伟伟 吴鹏程 任皓 SUN Xiaoqiang;HU Weiwei;WU Pengcheng;REN Hao(Automotive Engineering Research Institute,Jiangsu University,Zhenjiang,Jiangsu 212013,China;Traffic Management Research Institute of the Ministry of Public Security,Wuxi,Jiangsu 214151,China)

机构地区：[1]江苏大学汽车工程研究院,江苏镇江212013 [2]公安部交通管理科学研究所,江苏无锡214151

出　　处：《江苏大学学报（自然科学版）》2021年第6期621-627,共7页Journal of Jiangsu University：Natural Science Edition

基　　金：道路交通安全公安部重点实验室开放课题项目(2019ZDSYSKFKT09);中国博士后基金资助项目(2019T120398)。

摘　　要：针对传统纯电动客车失效调查方法无法准确阐明客车失效与“三电”系统主要故障间关联特性的问题,提出了基于信号分析的纯电动客车失效调查方法.在掌握纯电动客车运行过程中主要失效类型及“三电”系统主要故障的基础上,初步建立了不同失效类型与电动机、电池以及电控系统主要故障间存在的因果关系.为进一步明确系统故障点,构建了包含“三电”系统的纯电动客车整车模型,通过设置“三电”系统主要故障,模拟纯电动客车的人为失效,在此基础上针对系统易测信号进行分析,揭示系统不同故障的典型信号特征,从而明确纯电动客车不同失效类型与电动机、电池以及电控系统故障间存在的内在关联特性,最终形成纯电动客车失效调查方法.结果表明:所提出的纯电动客车失效调查方法能够有效揭示动力丢失、起火以及失控等客车失效类型与“三电”系统主要故障间存在的对应关系.To solve the problem that the correlation characteristics between the pure electric bus failure and the main faults of motor,battery and electric control systems could not be accurately elucidated by traditional failure investigation method,a new method based on signal processing was proposed.Based on the main failure types of pure electric bus and the main faults of motor,battery and electric control systems,the causal relationship between failure types and main faults of motor,battery and electric control systems was initially established.To further clarify the system failure point,the model of the pure electric bus including motor,battery and electric control systems was established.The artificial failures of pure electric bus were modeled by setting the main faults of motor,battery and electric control systems.The signals measured easily by system were analyzed,and the typical signal characteristics of different system faults were revealed.The correlation characteristics between the pure electric bus failure and the main faults of motor,battery and electric control systems were determined,and a new failure investigation method of pure electric bus was formatted.The results show that the proposed method can effectively reveal the relationship between the pure electric bus failure types of power loss,fire and out of control and the main faults of motor,battery and electric control systems.

关 键 词：纯电动客车 失效类型 系统故障 关联特性 信号分析 

分 类 号：U463[机械工程—车辆工程]