汽车工程 ›› 2018, Vol. 40 ›› Issue (11): 1354-1363.doi: 10.19562/j.chinasae.qcgc.2018.011.015

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基于结构分析法的汽车ABS故障诊断和识别系统设计与校验*

陈奇1, 姚志刚1, Qadeer Ahmed2, 陈无畏3, 樊浩1   

  1. 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
  • 收稿日期:2018-03-16 出版日期:2018-11-25 发布日期:2018-11-25
  • 通讯作者: 陈奇,副教授,博士,E-mail:qichen@hfut.edu.cn
  • 基金资助:
    国家自然科学基金(51775158,51675151)资助

Design and Verification of Fault Diagnosis and Identification System for Automotive Anti-lock Braking System Based on Structural Analysis Method

Chen Qi1, Yao Zhigang1, Qadeer Ahmed2, Chen Wuwei3, Fan Hao1   

  1. 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
  • Received:2018-03-16 Online:2018-11-25 Published:2018-11-25

摘要: 为实现汽车防抱死制动系统(ABS)的实时故障诊断、确定关键故障源的精确位置,本文中引入基于模型的结构分析法(SA)故障诊断理论,并开展ABS的故障诊断与识别(FDI)系统设计和校验。首先结合ABS的数学模型和系统关键故障,建立了初始系统故障模型,并利用SA对其进行故障可检测性和可隔离性分析,为提高ABS的故障诊断能力,研究最优的传感器配置方案;接着通过结构最小型超定方程集(MSO sets),设计系统的残差,进而建立ABS故障诊断和识别系统。最后在MATLAB/Simulink中搭建FDI系统的仿真模型,并对预设的故障进行诊断和识别。结果表明:该FDI系统能检测与定位所有的4个关键故障,其结果与SA理论分析一致,验证了其可行性。

关键词: 防抱死制动系统, 故障诊断, 结构分析法, 残差设计, 故障诊断与识别系统

Abstract: In order to realize the real-time fault diagnosis of automotive anti-lock braking system (ABS) and determine the exact location of key faults, the theory of fault diagnosis by model-based structural analysis (SA) is introduced in this paper to conduct the design and verification of fault diagnosis and identification (FDI) system for automotive ABS. Firstly combining with the mathematical model for ABS and the key faults of system, the fault model for initial system is established, on which the fault detectability and isolability are analyzed by using SA, and for enhancing the capability of fault diagnosis for ABS, the optimal schemes of sensor arrangement are studied. Then the residual error of system is designed with minimal structurally over-determined sets and hence the FDI system for ABS is built. Finally the simulation model for FDI system is set up in MATLAB/Simulink to diagnose and identify the preset faults. The results show that the FDI system can detect and locate all the four key faults preset, with a result consistent with that of theoretical analysis and its feasibility verified

Key words: ABS, fault diagnosis, structural analysis method, residual error design, fault diagnosis and identification system