Welcome to Journal of Automotive Safety and Energy,

Journal of Automotive Safety and Energy ›› 2023, Vol. 14 ›› Issue (6): 698-706.DOI: 10.3969/j.issn.1674-8484.2023.06.006

• Automotive Safety • Previous Articles     Next Articles

Structure design and optimization of a disc-drum hybrid magnetorheological device for pedal force control

QU Xian(), ZHANG Jinlong(), QU Lihong   

  1. Nanjing Vocational University of Industry Technology, College of Traffic Engineering, Nanjing 210023, China
  • Received:2023-07-21 Revised:2023-10-31 Online:2023-12-31 Published:2023-12-26

Abstract:

In order to solve the adverse effects of pedal feeling on regenerative braking of electric vehicles, a magnetorheological device (MRD) for pedal force control was designed with characteristics of root-embedding of the brake pedal. Based on the embedded installation requirements, a disk-drum hybrid structure was designed for the MRD. The magnetic circuit of the MRD was optimized by the finite element method. Finally, the performances of the MRD prototype were tested and analyzed. Results show that the designed MRD has a compact structure, which can implement embedded installation effectively. The output torque of the MRD is over 0.2-32 Nm, indicating its wide adjustable torque range. This wide range meets the needs of pedal force regulation. At the same time, the output torque is less affected by the speed. Thus, it can be accurately adjusted by the current control, which makes the MRD easy to control the pedal force adjustment.

Key words: regenerative brake, pedal force, magnetorheological device, structural design, magnetic circuit optimization

CLC Number: