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이지성(Ji Sung Lee),정재일(Jay Il Jeong),임홍재(Hong Jae Yim) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.5
Vibrational analysis for a machine vision system of the nanoimprint process is presented in this article. For the nano-imprinting equipment, the machine vision system is one of the essential parts in order to align the several layers or in order to inspect nano/micro patterns transferred by the nanoimprint. In the development, system resonance due to internal or external vibrational sources should be considered. In fact, the microvibration phenomenon is usually observed when measuring the position of the patterns by using the machine vision system. In this work, a detail design of the machine vision system is depicted. Based on the design, the normal mode analysis and frequency response analysis are carried out in order to find and to suppress the source of the micro-vibration. In the future, we hope that the results of the design consideration will be a guideline for constructing a machine vision system for the nanoimprint process.
김일환(Ilhwan Kin),기원용(Wonyong Ki),정재일(Jay Il Jeong),허승진(Seung-Jin Heo),박태완(Tae Wan Park),박창욱(Chang Wook Park) 한국자동차공학회 2009 한국자동차공학회 부문종합 학술대회 Vol.2009 No.4
The survey on the convertible roof system is introduced in this study. Various automotive companies in Europe, United states, and Japan have produced the conventional vehicles for several decades and the convertibles are very common in the foreign countries in these days. Although the demand for the convertible vehicles has been increased in Korea, the development of the original convertible vehicles are on its beginning stage. In order to develop the convertible vehicle, the roof system design for the convertible vehicles are essential and the research on the roof system should be conducted. In this paper, the convertible roof systems in conventional convertibles are discussed. The type and the mechanism of convertible roof systems are explained and compared. The direction of roof system research is also proposed.