하우징 위에 전자석코일을 갖고 있는 MR 브레이크의 최적설계

초록

This work presents a new design structure for a magneto-rheological brake (MRB) with magnetic coils located on either side of the housing. With this structural configuration, the designed MRB is expected to provide higher braking torque at a more compact brake unit size than can be offered by conventional MRBs in which the magnetic wire coils are wound onto the non-magnetic bobbin. The working principle underlying MRBs is briefly outlined, and thereafter, the Bingham-plastic rheological model of MR fluid braking torque is used to calculate the braking torque of the MRBs under consideration. To determine the principal design parameters, an optimization is undertaken by considering the minimum mass of the new brake necessary to meet the torque requirement. To demonstrate some of the intended merits of the proposed design configuration, a comparison between the proposed MRB and the existing conventional MRBs is drawn. It is shown that the proposed MRB can provide both a much higher torque level and a wider torque control range than can be achieved by conventional MRBs.

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