In this study, a compact magnetorheological (MR) fluid brake embedded in an orthosis was designed and fabricated to maintain plantar height for use in lateral fall prevention, and its performance and the fall prevention effect of the orthosis were evaluated. The results of the brake design and fabrication indicated that the MR fluid brake has the advantage of being compact, lightweight, and power-saving at 88.4 mm long, 128 g, using two AA batteries. Performance tests of the brake indicated that it was able to generate sufficient force (125 N) to maintain plantar height. Furthermore, through the assessments of lateral fall, the center of gravity and center of pressure inclination angle of a subject wearing the orthosis without the MR brake was determined to be 4.0°, as opposed to 4.4° with the MR fluid brake in the ON state. Therefore, the moment of force acting on the subject to prevent fall was larger, making them more stable when the MR fluid brake was in the ON state.

在这项研究中，设计并制造了一种嵌入矫形器的紧凑型磁流变 (MR) 流体制动器，以保持足底高度以防止侧向跌倒，并评估其性能和矫形器的跌倒预防效果。制动器设计和制造的结果表明，MR流体制动器在88.4 mm长、128 g、使用两节AA电池时具有紧凑、轻便和省电的优点。制动器的性能测试表明它能够产生足够的力 (125 N) 来保持足底高度。此外，通过对横向跌倒的评估，佩戴矫形器的受试者的重心和压力中心倾斜角确定为 4.0°，而 MR 流体制动器处于 ON 状态时为 4.4° . 所以，