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Published by AUTO FAN Magazine Co. Ltd.

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

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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

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