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Automotive Engineering ›› 2022, Vol. 44 ›› Issue (5): 736-746.doi: 10.19562/j.chinasae.qcgc.2022.05.011

Special Issue: 底盘&动力学&整车性能专题2022年

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Research Progress of EMB Clamping Force Control and Sensor Fault Diagnosis

Qixiang Zhang1,Liqiang Jin1,Bohao Jin1,Yihan Zhang1,Pengfei Chen2,Yongteng Liu3,4,Jianhua Li1()   

  1. 1.Jilin University,State Key Laboratory of Automotive Simulation and Control,Changchun  130022
    2.Intelligent Vehicle Control System Research Institute,Zhejiang Asia-Pacific Mechanical and Electronic Co. ,Ltd. ,Hangzhou  311200
    3.Beijing Automotive Research Institute Co. ,Ltd. ,Beijing  100079
    4.National Automobile Quality Supervision and Inspection Center (Beijing Shunyi),Beijing  101300
  • Received:2021-07-19 Revised:2021-12-02 Online:2022-05-25 Published:2022-05-27
  • Contact: Liqiang Jin,Jianhua Li E-mail:ljh_lotus@jlu.edu.cn

Abstract:

The electro-mechanical brake system (EMB) uses electronic control pure mechanical brake technology to realize various active safety control functions. It has the advantages of simple structure, rapid response, independent and precise control of wheel braking torque. To comprehensively sort out the development status of the EMB system and clarify its future technology trend, the structure of the EMB is introduced first, and the advantages and disadvantages of several typical structure types of the EMB are analyzed and main research directions in the future are determined. Then, the research progress at home and abroad is reviewed from two levels of clamping force control and sensor fault diagnosis. The development history and the focus of future research of clamping force control algorithms are analyzed, and the experiments’ results of three typical clamping force control algorithms are compared.Then, the specific types and functions of sensor fault diagnosis are introduced, and the actual control effect of different fault diagnosis algorithms is analyzed through quantitative indicators. Finally, the problems faced by the EMB system and future development trends are analyzed and prospected. It is pointed out that further research can be concentrated on improving the accuracy and robustness of algorithms of clamping force control and sensor fault diagnosis, etc., the coordinated controlling of the EMB and wire-controlled chassis integrated control technology and the influence of the EMB on the stability and comfort of the vehicle.

Key words: electro-mechanical braking system (EMB), structure type, clamping force control, sensor fault diagnosis