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Design and validation of outer rotor magnetorheological brake with multiple poles

机译：多极外转子磁流变制动器的设计与验证

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摘要

A magnetorheological brake with multiple poles and an outer rotor structure is introduced in this paper. It is designed to be used as a resistant source for bicycle training equipment. The outer rotor structures works as a roller against the bike rear wheel for indoor exercise. The key factors to affect the brake torque were found after an analysis of the magnetic circuit of the brake. Two structures with different pole numbers were simulated to find the optimal one which harmonises between the maximum output torque and the input power. Simulation results confirm the feasibility of the outer rotor magnetorheological brake concept. The optimal brake was later manufactured and experimented for validation. Its torque can be controlled precisely by an input current with a very fast response. The maximum brake torque is 5 Nm at a 0.9 A input current. Those phenomena are applicable for the bicycle training equipment. Moreover, the compact design of the brake shows advantages in weight and space reductions.
机译：介绍了具有多极和外转子结构的磁流变制动器。它被设计用作自行车训练器材的抵抗源。外部转子结构可作为滚轮抵靠自行车后轮进行室内运动。在分析了制动器的磁路之后，发现了影响制动器扭矩的关键因素。对具有不同极数的两种结构进行了仿真，以找到在最大输出转矩与输入功率之间协调的最佳结构。仿真结果证实了外转子磁流变制动器概念的可行性。后来制造了最佳制动器，并进行了试验以进行验证。它的扭矩可以通过输入电流精确控制，响应速度非常快。在0.9 A输入电流下，最大制动扭矩为5 Nm。这些现象适用于自行车训练器材。此外，制动器的紧凑设计在减轻重量和减小空间方面显示出优势。

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