Structural design and braking performance analysis of magnetorheological brakes with internal and external fluid flow channels

HU Jieying

doi:10.16578/j.issn.1004.2539.2026.01.003

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Structural design and braking performance analysis of magnetorheological brakes with internal and external fluid flow channels

Special Topic of Magnetic Transmission | 更新时间：2026-01-23

- Structural design and braking performance analysis of magnetorheological brakes with internal and external fluid flow channels
- Journal of Mechanical Transmission Vol. 50, Issue 1, Pages: 19-26(2026)
- 作者机构：
  
  华东交通大学机电与车辆工程学院，南昌 330013
- 作者简介：
- 基金信息：
- DOI：10.16578/j.issn.1004.2539.2026.01.003
  CLC： U463. 51;TH134
- Received：14 August 2024，
  
  Published：15 January 2026
- 稿件说明：
移动端阅览
胡洁颖. 内外液流通道式磁流变制动器结构设计及制动性能研究［J］.机械传动，2026，50（1）：19-26.

HU Jieying. Structural design and braking performance analysis of magnetorheological brakes with internal and external fluid flow channels［J］. Journal of Mechanical Transmission，2026，50（1）：19-26.
胡洁颖. 内外液流通道式磁流变制动器结构设计及制动性能研究［J］.机械传动，2026，50（1）：19-26. DOI： 10.16578/j.issn.1004.2539.2026.01.003.

HU Jieying. Structural design and braking performance analysis of magnetorheological brakes with internal and external fluid flow channels［J］. Journal of Mechanical Transmission，2026，50（1）：19-26. DOI： 10.16578/j.issn.1004.2539.2026.01.003.

摘要

目的

为提高磁流变制动器的转矩体积比，提出一种具有内外液流通道的磁流变制动器。

方法

首先，阐述了内外液流通道式磁流变制动器的结构和工作原理，基于Bingham本构模型建立了制动转矩数学模型；其次，基于非支配排序遗传算法（Non-dominated Sorting Genetic Algorithm

NSGA-Ⅱ）对制动器进行优化设计，得到最优结构尺寸；最后，加工磁流变制动器样机并搭建转矩性能测试系统，对制动器进行了制动性能试验。

结果

该制动器具备内外两条液流通道，通过合理设置导磁和隔磁材料，获得了6条有效阻尼间隙，从而使该制动器在外形尺寸不变的前提下具备优良的转矩性能。理论计算结果显示，优化后的制动转矩和可调范围比优化前分别提升了30.23%、16.58%。试验结果表明，当外加电流为2.0 A时，制动转矩最大可达44.28 N·m，动态可调范围为17.88；试验值与理论计算值的相对误差分别为6.5%和16.1%，验证了设计的合理性。

Abstract

Objective

In order to improve the torque to volume ratio of magnetorheological （MR） brakes

a MR brake with internal and external fluid flow channels was developed.

Methods

Firstly

the structure and working principle of the MR brake with internal and external fluid flow channels were introduced

and the mathematical model of the braking torque was established based on Bingham constitutive model. Secondly

in order to obtain the optimal structure size of the MR brake

structural optimization design was carried out based on the non-dominated sorting genetic algorithm (NSGA-Ⅱ). Finally

the prototype of MR brake was fabricated

the torque performance test system was built

and the braking performance test was conducted for the MR brake.

Results

There are both internal and external fluid flow channels in the MR brake. Six effective damping gaps are obtained by reasonable setting of magnetic conductive and magnetic isolating materials in the MR brake

so that it can produce excellent torque performance under the premise of the same size. The theoretical calculation results show that the braking torque and the adjustable range after optimization are increased by 30.23% and 16.58% respectively compared with those before optimization. Test results show that at the applied current of 2.0 A

the maximum braking torque is 44.28 N·m

and the dynamic adjustable range is 17.8. The relative errors of the braking torque and the dynamic adjustable range between the test values and the theoretical calculation values are 6.5% and 16.1% respectively

which verifies the rationality of the design.

关键词

Keywords

references

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