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유한요소해석을 이용한 조향장치 토크센서의 설계에 관한 연구
양현익,김용기 漢陽大學校 工學技術硏究所 1998 工學技術論文集 Vol.7 No.1
The oil-pressure type torque sensor has been adopted in steering system of major automobiles. However, it has been well known that this type of torque sensor needed many subcomponents and produced inaccurate responses. This paper intends to suggest new type of torque sensor based on the shape design by using finite element. A dedicated mesh generation, analysis and post result display program has been developed. As for the shape design purpose, the half shape of torque sensor is considered. The result of this study has shown that the design automation for precise torque sensor for control of· high velocity rotation shaft can be achieved without any expensive investment to the design software.
범용 CAD/CAM 소프트웨어의 비트맵 아이콘 모듈 개발
양현익 漢陽大學校 工學技術硏究所 1996 工學技術論文集 Vol.5 No.1
Graphical User Interface has been a key role for a user to select among the commercial softwares. Coventional Graphical User Interfaces of the general purpose CAD/CAM softwares provide pop-up and/or roll-down menu systems and require series of the mouse clicking actions, which is very tedious job for a entry level mechanical designer. Using Bitmap Icon architecture in Graphical User Interface can be a possible solution to avoid the aforementioned. It provides clear, soft and multi-colored icon image, and each icon can be furnished with the unique command. This paper describes the general development concept of the Bitmap Icon menu and its architecture, and implementation. To develope the Bitmap Icon menu system, several techniques are adapted, such as the precise control of the high resolution computer graphics, data interface techniques between UNIX system and PC, and color mapping. It has been sucessfully ported to the up-coming commercial CAD/CAM software named Eng3.
특정 병진작업경로에서 최소의 관절힘을 받는 병렬형 매니퓰레이터의 설계
양현익,이종우,허원혁 한국공작기계학회 2004 한국생산제조학회지 Vol.13 No.3
Recently, need of the parallel manipulator requiring superior precision is increasing for medical application and precision manufacturing. In this study, we convert a given complex translation trajectory of the moving platform into a set of segments and hence a complex motion of the moving platform an be tractable and easily controled in a very limited workspace. In addition force exerted. to each link is minimized so that the minimized force can be transmitted to the end effector of the moving platform. An user friendly program is developed to design Gough-type 6DOF parallel manupulator based on the proposed method.