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정원지(W. J. Chung),송태진(T. J. Song),정동원(D. W. Jung),방덕제(D. J. Bang),윤영민(Y. M. Yoon),김기현(K. H. Kim) 한국정밀공학회 2004 한국정밀공학회 학술발표대회 논문집 Vol.2004 No.10월
This research is that analyze multi-body system that have flexibility. We composed system consisted of crane, part of traveling and robot. And we analyzed the aspect of vibration when this system runs using ADAMS. Through this research we can analyze vibration and displacement of end-effect pill of the large size robot. And this research can become reference that is going to analyze resemblant dynamic system.
LCD 이송장치 Column 부의 식스 시그마 강건설계를 위한 연구
정동원(D. W. Jung),정원지(W. J. Chung),송태진(T. J. Song),방덕제(D. J. Bang),윤영민(Y. M. Yoon) 한국정밀공학회 2005 한국정밀공학회 학술발표대회 논문집 Vol.2005 No.10월
This research studied robust design of column part for LCD transfer system. 1<SUP>st</SUP> DOE(Design of Experiment)was conducted to find out main effect factors. 36 experiments were performed and their results were shows that the geometric parameters(Low-length, Side-length, Upper-thickness, Middle-thickness)are more important than other factors. The main effect plots shows that the maximum deflection of column is minimized with increasing Low-length, Side-length, underthickness and Middle-thickness. 2<SUP>nd</SUP> DOE was conducted to obtain RMS(Response Surface Method)equation 25 experiments were conducted. The CCD(Central Composite Design)technique with four factors were used. The coefficient of determination (R²) for the calculated RSM equation was 0.986. Optimum design was conducted using the RSM equation Multi-island genetic algorithm was used to optimum design. Optimum value for Low-length, Side-length, Upper-thickness and Middle-thickness were 299.8㎜, 180.3㎜, 21.7㎜, 21.9㎜ respectively. An approximate value of 5.054㎜ in deflection was expected to be a maximum under the optimum conditions. Six sigma robust design was conducted to find out guideline for control range of design parameter. To acquire six sigma level reliability, the standard deviation of design parameter should be controlled within 2% of average design value.