Abstract This paper presents comprehensive investigations on a new multi-pole multi-layer magnetorheological (MR) brake. This unique design features MR working gaps set between two-layer individual coils. Independent current supply was proposed to generate more flexible braking torque and lower power consumption. In this article, an exploded-view drawing of the proposed MR brake was presented, and theoretical analyses of the braking torque and temperature characteristic were conducted. Then, finite element analysis was performed to verify the effect of the magnetic field superposition. A prototype MR brake was fabricated and tested to evaluate the magnetic field superposition, preliminary dynamic behavior, temperature and the performance of individual input current. The results show that the magnetic field superposition has much influence on the braking torque, and individual current supply results in different power consumption and torque ranges. Moreover, the dynamic response performance of this brake is less affected by the slip speed. Furthermore, the maximum steady-state slip power of the proposed brake is about 160 W, and the greater the slip power is, the faster the temperature increases. The results also have verified the correctness of the structure and magnetic circuit design.

中文翻译：

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叠加磁场多极多层磁流变制动器仿真与实验研究

摘要 本文对新型多极多层磁流变 (MR) 制动器进行了全面研究。这种独特的设计在两层独立线圈之间设置了 MR 工作间隙。提出了独立的电流供应，以产生更灵活的制动扭矩和更低的功耗。在本文中，提出了所提出的 MR 制动器的分解图，并对制动扭矩和温度特性进行了理论分析。然后，进行有限元分析以验证磁场叠加的效果。制造并测试了原型 MR 制动器，以评估磁场叠加、初步动态行为、温度和单个输入电流的性能。结果表明，磁场叠加对制动力矩影响较大，单独供电会导致不同的功耗和力矩范围。而且这种制动器的动态响应性能受打滑速度的影响较小。此外，所提出的制动器的最大稳态滑差功率约为 160 W，滑差功率越大，温度升高越快。结果也验证了结构和磁路设计的正确性。温度升高得越快。结果也验证了结构和磁路设计的正确性。温度升高得越快。结果也验证了结构和磁路设计的正确性。