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Optimal design of a new multipole bilayer magnetorheological brake

机译：新型多极双层磁流变制动器的优化设计

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摘要

This article presents a new high-torque multipole bilayer magneto-rheological brake (MRB). This MRB has a unique structural design with multiple electromagnetic poles and multiple media layers of magnetorheological fluid (MRF). The MRB has two rotors located on the outer and inner sides of a six-pole stator, and therefore, it can provide higher torque and a larger torque-to-volume ratio (TVR) than conventional single- or multipole single-layer MRBs can. Moreover, the problem of potential MRF leakage is solved by using cylindrical separator rings around the stator. In this study, first, the structure of the proposed MRB is introduced. An analog magnetic circuit was built for the MRB to investigate the effects of the MRB parameters on the magnetic field intensity of the MRF layers. In addition, a 3D electromagnetic model of the MRB was developed to simulate and examine the magnetic flux intensity and corresponding braking torque. An approximate optimization method was then applied to obtain the optimal geometric dimensions for the major dimensional parameters of the MRB. The MRB was manufactured and tested to validate its torque and dynamic characteristics. The results showed that the proposed MRB exhibited great enhancement of the braking torque and TVR.
机译：本文提出了一种新型的高扭矩多极双层磁流变制动器（MRB）。该MRB具有独特的结构设计，具有多个电磁极和多个磁流变流体（MRF）介质层。 MRB在六极定子的外侧和内侧有两个转子，因此，与传统的单极或多极单层MRB相比，它可以提供更高的转矩和更大的转矩体积比（TVR）。 。此外，通过在定子周围使用圆柱形分隔环解决了潜在的MRF泄漏问题。在这项研究中，首先，介绍了建议的MRB的结构。为MRB建立了一个模拟磁路，以研究MRB参数对MRF层的磁场强度的影响。此外，开发了MRB的3D电磁模型来模拟和检查磁通强度和相应的制动扭矩。然后应用一种近似优化方法来获得MRB主要尺寸参数的最佳几何尺寸。制造并测试了MRB，以验证其扭矩和动态特性。结果表明，所提出的MRB显示出制动扭矩和TVR的极大提高。

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