吉林大学学报(工学版) ›› 2015, Vol. 45 ›› Issue (4): 1056-1062.doi: 10.13229/j.cnki.jdxbgxb201504005

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Design of braking torque graded structures of permanent magnet retarder

HE Ren, WANG Jing, HU Dong-hai   

  1. School of Automobile and Traffic Engineering, Jiangsu University, Zhenjiang 212013,China
  • Received:2013-11-28 Online:2015-07-01 Published:2015-07-01

Abstract: To design the braking torque graded permanent magnet retarder, the rules of the factors that influence the braking torque retarder must be understood. In this paper, the mathematical model of the air-gap of magnetic field was established by means of analytic method. Using variable separation method and boundary conditions, the analytical expression of the magnetic induction intensity of the air-gap was obtained. According to the source and field theory, the computation model of braking torque, applicable to engineering application, was derived. The impacts of the number of magnetic pole pairs, the perimetric width and axial length of the permanent magnet, and the air-gap on the magnetic induction intensity and on the braking torque were analyzed based on the computation model. Based on the four parameters, four types of graded braking torque structures of the permanent magnet retarder were designed.

Key words: vehicle engineering, retarder, braking torque graded, magnetic induction intensity, structure design

CLC Number: 

  • U463.5
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