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보행약자의 자립보행과 능동적 일상 활동을 지원하는 보행보조로봇 개발
이일권(I. K. Lee) 한국재활복지공학회 2017 한국재활복지공학회 학술대회논문집 Vol.2017 No.4
In this paper, usability test and design based development were carried out for walking assistant robot and lower extremity exoskeleton robot to help self reliance walking and daily activities for weak pedestrian. The cooperation of walking assistant robot and lower extremity exoskeleton robot enable to easily transfer from walking trial stage to self reliance walking. User oriented design and focus group implemented as a test product and usability evaluated for next step improvement. The new design and usability based development evaluated as acceptable for the category of design and convenience.
이일권(I. K. Lee),이응혁(E. H. Lee) 한국재활복지공학회 2018 재활복지공학회논문지 Vol.12 No.4
본 논문은 사용성평가와 디자인을 바탕으로 보행약자의 일상생활을 지원하는 보행보조기와 하지근력보조장치를 개발하는 것에 관한 것이다. 보행보조기와 결합한 하지근력 보조장치 디자인, 사용편리성과 안전성을 고려한 연구로 보행시도단계에서 자립보행단계로의 전환을 용이하게 하는 시제품을 제작하고 그 유효성을 검증하는 시험을 하였다. 사용자 중심의 디자인과 포커스그룹을 통해 시제품을 평가하고 개선항목을 추출하였다. 새로운 디자인기반과 사용편리성에 근거한 개발방법은 편리성과 디자인에서 좋은 평가를 받았다. This paper discusses the development of a walking assistant rollator and a lower extremity exoskeleton robot, based on usability test and new design. These devices are aimed at assisting the elderly and patients with walking dysfunction in carrying out their daily activities. The lower extremity exoskeleton robot which is attached to the robotic walker enables its users not only to stand up by themselves but also to walk without being assisted by others. Through focus group survey, test product was assessed to further improve the devices. In the assessment, the user-friendly design and the development aimed at enhancing usability were highly appreciated.
고속 디스크 브레이크의 마찰열 변형거동에 관한 수치적 연구
김청균(C.K.Kim),조승현(S.H.Cho),이일권(I.K.Lee) 한국자동차공학회 1998 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1998 No.11_1
The thermal behavior of a disk-pad brake during a braking has been analyzed for a high speed of 300km/h. Using a coupled thermal-mechanical analysis, the contact stress and thermal distortions at the rubbing surfaces between disk and pad have been investigated based on the convective heat transfer environments. The FEM results indicate that multiple spot pads shows good thermal characteristics compared with those of the flat pad for a increased portion of braking energy.<br/>