http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
마비 환자의 정상적 보행을 위한 능동형 단하지 보조기 개발
황성재,김정윤,황선홍,박선우,이진복,김영호,Hwang, Sung-Jae,Kim, Jung-Yoon,Hwang, Seon-Hong,Park, Sun-Woo,Yi, Jin-Bock,Kim, Young-Ho 대한인간공학회 2007 大韓人間工學會誌 Vol.26 No.2
In this study, we developed an active ankle-foot orthosis(AAFO) which can control dorsi/ plantar flexion of the ankle joint to prevent foot drop and toe drag during walking. 3D gait analyses were performed on five healthy subjects under three different gait conditions: the normal gait without AFO, the SAFO gait with the conventional plastic AFO, and the AAFO gait with the developed AFO. As a result, the developed AAFO preeminently induced the normal gait compared to the SAFO. Additionally, AAFO prevented foot drop by proper plantarflexion during loading response and provided enough plantarflexion moment as a driving force to walk forward by sufficient push-off during pre-swing. AAFO also could prevent toe drag by proper dorsiflexion during swing phase. These results indicate that the developed AAFO may have more clinical benefits to treat foot drop and toe drag, compared to conventional AFOs, and also may be useful in patients with other orthotic devices.
정원복(Won Bok Chung),황선홍(Seon Hong Hwang),김윤성(Yoon Sung Kim),김상식(Sang Sik Kim) 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.2015 No.11
Loop heat pipes (LHPs) are useful to transfer large heat in the long distance regardless of gravity heat. As the previous study, reversible loop heat pipe (RLHP) could be able to transfer for 2 m with 1200 W (35.5 W/㎠) in the 0.2 m gravitational head range. We had conducted test to figure out heat flux limit applied by sintered metal wick that we had developed for the RLHP. To conduction the heat flux test, we made two LHPs having an evaporator which was applied nickel wick with porosity 67%, average pore size 2.6㎛. The inside of the evaporator wall was designed for micro grooves with circumferential direction and the pitch of the grooves of two LHPs was 0.25 ㎜ and 0.30 each. The condenser of the LHPs had double wall pipe and 10°C coolant had went through. As the result, LHP which had 0.25 ㎜ pitch grooves was better performance than the LPH of 0.3 ㎜ pitch grooves. The maximum heat flux was 73 W/㎠