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2자유도 제어기를 이용한 CNC볼엔드밀링 공정에서 절삭력과 위치의 동시제어
양호석,심영복,이건복 한국공작기계학회 2002 한국공작기계학회 춘계학술대회논문집 Vol.2002 No.-
There are two important variables in machining process control, which are feed and cutting speed. In this work, a two degree-of-freedom controller is designed and implemented to achieve on-line cutting force control and position control based on the modelling of cutting process dynamics which are established through step response test. Two schemes are proposed and implemented. The first is feed control under the constant spindle speed and spindle speed control under the constant feed speed. The second is a simultaneous control of feed and spindle speed. The last performs a position control under the constant cutting force. Those are confirmed to work properly. Especially the latter shows a faster response.
양호석 한국미생물학회 1987 微生物과 産業 Vol.13 No.1
국내외 생물공업의 현황과 전망에 관해 주로 일본과 미국의 생물공업, 특히 산업계의 현황에 촛점을 맞추어 봄으로써 결과적으로 국내생물공업의 현주소를 헤아려 보는 계기가 되도록 하겠다.
등록금 및 장학금이 대학생 휴학률에 미치는 영향: 패널회귀모형을 이용한 실증분석
양호석,최재석,한준태,정진아,Yang, Hoseok,Choi, Jae-Seok,Han, Jun-Tae,Jeong, Jina 한국데이터정보과학회 2015 한국데이터정보과학회지 Vol.26 No.3
In this paper, we configured the panel data of four years using the information of Higher Education In Korea (2010~2013) and studied the influence of tuition and scholarships on the stop-out rate of national university and private university separately through a panel analysis. Three models are implemented considering various variables suck as faculty-student ratios, employment rate, per pupil expenditure, average tuition, and per pupil scholarship. This study showed that the lower net tuition and the higher per pupil off-campus scholarship lowered the stop-out rate at national universities and the lower tuition and the higher per pupil scholarship lowered the stop-out rate at private universities.