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<p>Friction brakes in automobiles suffer from thermal fading issues, while magnetic brakes offer the advantage of non-contact operation. A hybrid braking system combining both can enhance the anti-thermal degradation performance and service life of friction brakes. This article focuses on the design calculation, parameter optimization, and experimental verification of an in-wheel friction-magnet hybrid braking device (HBD). First, the structure and working principle of the HBD were presented, and its structural parameters were designed based on the selected vehicle model. Next, the structural parameters of the HBD were optimized using the particle swarm optimization (PSO) algorithm. Then, through closed magnetic circuit analysis and three-dimensional (3D) finite element magnetic field analysis of the magnetic brake, the magnetic leakage coefficients (MLCs) under maximum braking torque and non-braking conditions were calculated, thereby determining the design parameters of the HBD. Finally, a prototype of the HBD and a test bench were fabricated, and bench tests were conducted to verify its feasibility and superiority.</p>

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Design and Testing of an In-wheel Hybrid Braking Device Combining Friction and Magnet

  • 期刊论文

  • 发表日期：

    2026年3月6日

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  • Kuiyang Wang,
  • Yijin Feng,
  • Jiaqi Yu,
  • Hang Yun,
  • Jinhua Tang

摘要

Friction brakes in automobiles suffer from thermal fading issues, while magnetic brakes offer the advantage of non-contact operation. A hybrid braking system combining both can enhance the anti-thermal degradation performance and service life of friction brakes. This article focuses on the design calculation, parameter optimization, and experimental verification of an in-wheel friction-magnet hybrid braking device (HBD). First, the structure and working principle of the HBD were presented, and its structural parameters were designed based on the selected vehicle model. Next, the structural parameters of the HBD were optimized using the particle swarm optimization (PSO) algorithm. Then, through closed magnetic circuit analysis and three-dimensional (3D) finite element magnetic field analysis of the magnetic brake, the magnetic leakage coefficients (MLCs) under maximum braking torque and non-braking conditions were calculated, thereby determining the design parameters of the HBD. Finally, a prototype of the HBD and a test bench were fabricated, and bench tests were conducted to verify its feasibility and superiority.