基于模型的汽车电动助力转向系统故障诊断

doi:10.19562/j.chinasae.qcgc.2019.07.016

汽车工程 ›› 2019, Vol. 41 ›› Issue (7): 839-850.doi: 10.19562/j.chinasae.qcgc.2019.07.016

基于模型的汽车电动助力转向系统故障诊断

陈奇¹, 汪金成¹, QadeerAhmed², 姚志刚¹, 陈无畏³

1. 合肥工业大学机械工程学院,合肥 230009;
2.美国俄亥俄州立大学汽车研究中心,哥伦布 43212;
3.合肥工业大学车辆与交通工程学院,合肥 230009

出版日期:2019-07-25 发布日期:2019-07-30
通讯作者: 陈奇,副教授,博士,E-mail:qichen@hfnt.edu.cn。
基金资助:
国家自然科学基金(51775158和51675151)资助

Model-based Fault Diagnosis of Automotive Electric Power Steering System

Chen Qi¹, Wang Jincheng¹, Qadeer Ahmed², Yao Zhigang¹ ,Chen Wuwei³

1.School of Mechanical Engineering, Hefei University of Technology, Hefei 230009;
2.Center of Automotive Research, The Ohio State University, Columbus 43212;
3.School of Automobile and Traffic Engineering, Hefei University of Technology, Hefei 230009

Online:2019-07-25 Published:2019-07-30

摘要/Abstract

摘要： 为实现电动助力转向系统(EPS)的状态监测和关键故障诊断,本文中引入基于模型的结构分析法(SA)故障诊断理论,结合EPS数学模型和系统关键故障,建立系统故障数学模型;利用SA方法中的系统结构表征、DM分解和故障隔离矩阵分析其故障的可检测和可隔离性,获得EPS故障诊断系统最优传感器配置,并得到5组结构最小型超定方程集(MSO sets);设计5组MSO残差,并搭建MATLAB/Simulink故障诊断系统模型,检验5组残差的信号特征和故障状态,验证EPS故障诊断设计系统的有效性,为后续的试验验证奠定基础。

关键词: 电动助力转向系统, 故障诊断, 故障模型, 结构分析, 故障检测与识别系统

Abstract: In order to realize the state monitoring and key faults diagnosis of electric power steering (EPS) system, the theory of fault diagnosis with model-based structural analysis (SA) is introduced in this paper. By combining with the mathematical model of EPS and the key faults of system, the fault model of system is established. Structural analysis methods such as the structural representation of system, Dulmage-mendelsohn decomposition and fault isolation matrix are employed to analyze the detectability and isolability of faults, to get the optimal sensor configuration of fault diagnosis system for EPS, and to obtain five minimal structural over-determined sets (MSO sets).The residuals for five MSO sets are designed, the fault diagnosis system is constructed with MATLAB/Simulink, the signal features and fault states of five residuals are checked, and the effectiveness of the fault diagnosis design system for EPS is verified, laying a foundation for follow-up test verification

Key words: electric power steering, fault diagnosis, fault model, structural analysis, FDI system

陈奇, 汪金成, QadeerAhmed, 姚志刚, 陈无畏. 基于模型的汽车电动助力转向系统故障诊断[J]. 汽车工程, 2019, 41(7): 839-850.

Chen Qi, Wang Jincheng, Qadeer Ahmed, Yao Zhigang , Chen Wuwei. Model-based Fault Diagnosis of Automotive Electric Power Steering System[J]. Automotive Engineering, 2019, 41(7): 839-850.

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基于模型的汽车电动助力转向系统故障诊断

Model-based Fault Diagnosis of Automotive Electric Power Steering System

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