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Automotive Engineering ›› 2023, Vol. 45 ›› Issue (12): 2187-2199.doi: 10.19562/j.chinasae.qcgc.2023.12.001

Special Issue: 底盘&动力学&整车性能专题2023年

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Review on Electro-Mechanical Brake Structure and Control Technology

Lu Xiong1,2,Congcong Li1,2(),Guirong Zhuo1,2,Yulin Cheng1,2,Le Qiao1,2,Xinjian Wang1,2   

  1. 1.College of Automotive Engineering,Tongji University,Shanghai  201804
    2.Clean Energy Automotive Engineering Center,Tongji University,Shanghai  201804
  • Received:2023-05-31 Revised:2023-06-18 Online:2023-12-25 Published:2023-12-21
  • Contact: Congcong Li E-mail:2211106@tongji.edu.cn

Abstract:

As a complete form of brake-by-wire system, electro-mechanical brake (EMB) system has many advantages such as simplified structure and rapid braking response. To give a comprehensive review on the development status of EMB structure, the development and industrialization of various structure schemes are summarized based on investigation of a large number of patents in this paper. And four basic structure schemes including the ball-screw-type, wedge-type, ball-ramp-type and cam-type scheme are analyzed and compared. For the clamping force control problem of the actuator with nonlinear characteristics and slow time-varying parameter perturbations, firstly a review on the actuator modeling methods is conducted in this paper. Then through the classification based on the presence or absence of pressure sensors, the research progress both home and abroad is reviewed from two aspects: clamping force control methods based on the feedback force value and control methods based on the estimated force value. Finally, future development trends of the actuator structure design, clamping force control and vehicle coordination redundancy control are prospected.

Key words: brake-by-wire, electro-mechanical brake, structure, clamping force control, clamping force estimation