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최경현(Kyung Hyun Choi),조수정(Su Jeomg Cho),양형찬(Hyoung Chan Yang) 한국생산제조학회 2007 한국생산제조학회지 Vol.16 No.5
This paper proposes the Elastic force application on the obstacle avoidance of Silvermate robots. The method deals with the problem associated with a Silvermate robot driving to a goal configuration as avoiding obstacles. The initial trajectory of a robot is determined by a motion planner, and the trajectory modification is accomplished by adjusting the control points. The control points are obtained based on the elastic force approach. Consequently the trajectory of a robot is incrementally modified to maintain a smooth and adaptive trajectory in an environment with obstacles. The suggested algorithm drives the robot to avoid obstacle in real-time. Finally, The simulation studies are carried out to illustrate the effectiveness of the proposed approach.
SAW-ED 시스템을 이용한 유/무기 소재 증착에 관한 연구
김현범(Hyun Bum Kim),김경환(Kyung Hwan Kim),시디쿠이 가야수딘(Siddiqi Ghayas),임종환(Jong Hwan Lim),양형찬(Hyoung Chan Yang),최경현(Kyung Hyun Choi) 한국기계가공학회 2016 한국기계가공학회지 Vol.15 No.5
In various industries, many researches studies have been done in using nano thin film fabrication technology. In the field of printed electronics, various electronic devices can be fabricated using a direct printing process of on multiple functional materials. It has the advantages of low prices, environment-friendly environmentally friendly, flexibleility, large scale, mass production produced, simple process and so on. In this study, a viable thin film fabrication technology has beenwas introduced using the surface acoustic wave mechanism for thin film deposition. Fabrication of thin films using organic, inorganic and composite of organic/inorganic materials have been were analyzed through the experimental research. In this experiment, organic material MEH:PPV, inorganic material ZnO and composite material MEH:PPV/ZnO have been depo sited as thin films.