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- 저자 : 김연민(Yearn-Min Kim) (검색결과 6 건)
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가상 PLC 검증 시스템의 구현 사례 : 자동차 의장 라인의 예
배성훈,김연민,Bae, Seong-Hun,Kim, Yearn-Min 한국시뮬레이션학회 2010 한국시뮬레이션학회 논문지 Vol.19 No.2
This study presents a system for validating the PLC code in the virtual environments of automobile trim line. There have been considerable efforts to develop standard PLC editors for saving human power and PLC test time. However, it was difficult to apply the PLC editor on a real shop floor environment. A virtual equipment was developed to communicate with the PLC module of a shop floor and to make up the connectivity environment by a special protocol. We can validate the code without launching real equipments because the PLC module and the virtual equipment is able to be controlled in real time by the OPC protocol. An experimental model is applied to the final assembly line of an automotive industry and validated by using DELMIA Automation. In conclusion, the system is valuable in the process of PLC codes validation and virtual equipments operation. This system would reduce the development time of the PLC codes and improve the productivity and the integrity of the PLC codes.
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첨단제조기술의 타당성 평가를 위한 전문가 시스템의 개발
김연민 울산대학교 1993 공학연구논문집 Vol.24 No.1
본 연구는 첨단 제조기술의 평가를 위한 전문가 시스템을 INSIGHT 2 셀을 이용하여 개발하였다. 첨단 제조기술의 평가기법은 경제적 분석방법, 분석전 방법, 전략적 분석기법을 고려했으며, 실제로 점수법의 일종인 XVENTURE법을 이용, 첨단 제조기술의 도입 여부에 대한 평가를 하게 했다. In this study, expert system for the justification of advanced manufacturing technology was developed using Insight 2 shell. One of the justification approaches for advanced manufacturing technology, such as economic approach. analytic approach, and strategic approach could be selected in this expert system. Adoption of advanced manufacturing technology by xventure method was also protyped.
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인지적 제조 시스템을 위한 공정 설계 전략-개념적 모형
김연민 울산대학교 1999 공학연구논문집 Vol.30 No.2
This study suggest conceptual models using experiential cognition, reflective cognition, and motivation variables and also develops propositions for empirical study by field observation. Job characteristic model for job design and recent cognitive engineering studies for process design are reviewed briefly. By using these concepts, lean production system was interpreted in terms of cognitive engineering and the latent dimensions of the lean production system are revealed as the application of cognitive engineering principles. Integrated process design framework for cognitive manufacturing system using job characteristic model is suggested for effective design of manufacturing system. Experiential cognition and reflective cognition make four possible modes of cognitive design-reactive mode, entrepreneurial mode, planning mode, adapting mode. Of which planning mode is regarded as the most important mode at the level of operator for manufacturing system design. By using dimensions of the task motivation potential and the experiential cognition, four process design strategies-machine resource centered process design strategy, human resource dependent process design strategy, machine resource dependent process design strategy, and human resource centered process design strategy-are suggested. In the complex and dynamic environment, human resource centered process design strategy is emphasized for effective manufacturing system. Propositions for empirical analysis of this model are also developed through theoretical analysis as well as field observation. Propositions are (1) experiential cognition and motivation potential affect the ability, role perception, and motivation of the operator in the manufacturing system (2) the ability, role perception, and motivation of the operator affect the manufacturing performance.
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김연민 울산대학교 1999 공학연구논문집 Vol.30 No.2
This study reveals the process of technology innovation in teh automobile industry which needs an integrated innovation, and suggests means for technological innovation in capital good by the longitudinal analysis and the deep case study of production processes and facilities of an automobile factory. This paper analyzes the course of the process innovation, its motives, the direction of its development, and compares the past processes with the present processes of the Hyundai Motor Company. An interview was conducted for a concrete and vivid understanding of the development of the production processes and facilities using predesigned interview form. As a result, the investment of the facilities and state of the in-house development of facilities, and the problems of localization were also revealed. In Conclusion, propositions for the technology innovation of capital goods industry and the means for fostering the capital goods industry were suggested.
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