Design and Analysis of High Torque Compression Magnetorheological Brake
王喆①WANG Zhe；张天一②ZHANG Tian-yi；
王传玉②WANG Chuan-yu；潘道远②PAN Dao-yuan
（①奇瑞商用车（安徽）有限公司，芜湖 241000；②安徽工程大学机械工程学院，芜湖 241000）
（①Chery Commercial Vehicle（Anhui）Co.，Ltd.，Wuhu 241000，China；②School of Mechanical Engineering，Anhui Polytechnic University，Wuhu 241000，China）
摘要：针对磁流变制动器制动转矩较小的问题，利用磁流变液的挤压强化特性设计了目标转矩为 1800N·m 大转矩磁流变挤压制动器，并使用 CATIA 软件完成三维建模。基于磁流变液的 Bingham 模型，以磁流变制动器的制动转矩最大、体积最小为优化目标，应用 MATLAB 软件中的多目标遗传算法进行优化设计。利用 ANSYS 软件对优化前后磁流变液的磁感应强度进行仿真分析。结果表明：当励磁电流达到 15A 时，磁流变制动器的制动转矩能够达到设计目标。所提出的磁流变制动器磁路多目标优化设计方法是有效的，能够获得更加紧凑的磁路结构，提高了磁流变制动器的制动力矩。
Abstract: Aiming at the problem of small braking torque of magnetorheological (MR) brake, in this paper, the structure of the MR extrusion brake with a target torque of 1800 N·m is designed by using the extrusion strengthening property of the MR fluid, and the threedimensional modeling is completed by using CATIA software. Based on the Bingham model, the maximum braking torque and the minimum volume of the MR brake are taken as the optimization objectives, the multi-objective genetic algorithm in MATLAB software was used to optimize the design, and the magnetic induction intensity of the MR fluid in the MR brake before and after optimization was simulated and analyzed in ANSYS software. The results showed that when the excitation current reaches 15 A, the braking torque of the MR brake can reach the design goal. The proposed multi -objective magnetic circuit optimization design method is effective, which can obtain more compact magnetic circuit structure and improve the braking torque of the magnetorheological brake.
关键词：磁流变制动器；磁流变液；有限元仿真；多目标优化
Key words: MR brake；MR；finite element simulation；multiobjective optimization
中图分类号：TH139 文献标识码：A 文章编号：1006-4311（2024）26-079-05 doi:10.3969/j.issn.1006-4311.2024.26.023
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