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- 저자 : 정광영(Jeong Gwang Yeong) (검색결과 5 건)
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Reconstruction of the state variables from the low order controller
정광영,Jeong, Gwang-Yeong 제어·로봇·시스템학회 1998 제어·로봇·시스템학회 논문지 Vol.4 No.1
발란싱 축소모델의 상태변수는 플랜트의 상태변수에 대한 정보를 주지 못한다. 발란싱 축소모델을 좌표 변환하여 얻은 상태유지 축소모델은 그 축소오차가 발란싱 축소모델의 축소오차와 같음을 증명하였다. 상태축소오차를 정의하였고, 이 오차를 구하는 방법을 제시하였는데, 이 오차는 축소모델의 차수가 정해지면 불변임을 증명하였다. 상태유지 축소모델의 상태변수는 그 상태축소오차가 작은 경우 원 시스템의 상태변수를 근사하는 장점이 있다. 상태유지 축소모델을 저차원제어기 설계에 적용하여 저차원 상태변수가 플랜트의 상태변수를 근사하는 예를 보여주었다.
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정광영,김영배,Jeong, Gwang-Yeong,Kim, Yeong-Bae 대한기계학회 2002 大韓機械學會論文集A Vol.26 No.9
The latch needle cam system of circular knitting machines is analysed using multibody dynamics. A formulation is made to obtain the vertical stiffness between the needle and the cam. By implementing this formulation into the data of the multibody dynamics program, the motion of the needle is described and the forces and impulses between the needle and the cam are obtained.
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Ionization and Divalent Cation Complexation of Quinolone Antibiotics in Aqueous Solution
박형륜,정광영,이형철,이진기,백기민,Park, Hyeong Ryun,Jeong, Gwang Yeong,Lee, Hyeong Cheol,Lee, Jin Gi,Baek, Gi Min Korean Chemical Society 2000 Bulletin of the Korean Chemical Society Vol.21 No.9
The protonation and divalent cation complexation equilibria of several quinolone antibiotics such as nalidixic acid (NAL),flumequine (FLU), oxolinic acid (OXO), ofloxacin (OFL), norfloxacin (NOR) and enoxacin (ENO) have been examined by potentiome tric titration and spectrophotometric method. The antibacterial activity of these drugs depends upon the pH and the concentration of metal cations such as Mg2+ , Ca2+ in solu-tion. The apparent ionization constants of NAL, FLU, OXO, OFL, NOR and ENO in aqueous solution were found to be 6.33, 6.51, 6.72, 7.18, 7.26, and 7.53, respectively. In aqueous solution, NAL, FLU and OXO were found to be present mainly as two chemical species : molecularand anionic; but OFL, NOR and ENO were present mainly as three chemical species : anionic, neutral zwitterionic and cationic form, in equilibrium. The pKa1 and pKa2are found to be 6.10 and 8.28 for OFL; 6.23 and 8.55 for NOR; 6.32 and8.62 for ENO, respec-tively. The complex formation constants between OFL, NOR or FLU and some divalent cations are measured at pH 7.5. The 1 : 1 complexes are formed mainly by ion-dipole interaction. FLU has somewhat larger Kf values than OFL and NOR because its molecular size is small and the FLU is present asanionic form at pH 7.5.
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김학식(Kim Hag Sig),정광영(Jeong Gwang Yeong) 대한공업교육학회 2003 대한공업교육학회지 Vol.28 No.1
Recently the supplier based educational system changes into the demander based system as industries require workers to have ability and skill for the field. The paper presents the module text model for pneumatics that is widely used in the field of factory automation. The contents of the module text include the technologies and field abilities that are obtained through curriculum analysis according to job specifications. By developing the module text based on the learning step and learner`s level, it is possible for the learner to learn the contents on his own initiative based on his individual ability. Web based training contents are also developed to study through the internet. Linking the module text with web based learning contents enables on-line and off-line learning. This will improve the learner`s individual learning ability, which will contribute to the demander based educational system.
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국립해양조사원 해양예측시스템 소개 (I): 현업 운영 전략, 외부 해양·기상 자료 내려 받기 및 오류 알림 기능
변도성,서광호,박세영,정광영,이주영,최원진,신재암,최병주,BYUN, DO-SEONG,SEO, GWANG-HO,PARK, SE-YOUNG,JEONG, KWANG-YEONG,LEE, JOO YOUNG,CHOI, WON-JIN,SHIN, JAE-AM,CHOI, BYOUNG-JU 한국해양학회 2017 바다 Vol.22 No.3
This note provides technical guide on three issues associated with establishing and automatically running regional ocean forecasting systems: (1) a strategy for continuous production of hourly-interval three-day ocean forecast data, (2) the daily download of ocean and atmospheric forecasting data (i.e., HYCOM and NOAA/NCEP GFS data), which are provided by outside institutions and used as initial condition, surface forcing, and boundary data for regional ocean models, and (3) error notifications to numerical model managers through the Short Message Service (SMS). Guidance on dealing with these three issues is illustrated via solutions implemented by the Korea Hydrographic and Oceanographic Agency, since in embarking on this project we found that this procedural information was not readily available elsewhere. This technical guide is based on our experiences and lessons learned during the process of establishing and operating regional ocean forecasting systems for the East Sea and the Yellow and East China Seas over the 5 year period of 2012-2016. The fundamental approach and techniques outlined in this guide are of use to anyone wanting to establish an automatic regional and coastal ocean forecasting system. 이 노트는 국립해양조사원이 5년(2012~2016년)간에 걸쳐 지역해(동해, 황 동중국해) 수치예측시스템을 구축하여 자동으로 끊임없이 운영하면서 확보한 기술들 중 다음 3가지를 담고 있다. (1) 끊임없이 3일 해양예측 자료를 생산하기 위한 전략, (2) 매일 특정시각에 외부 해양 기상자료(HYCOM, NOAA/NCEP GFS)를 안정적으로 내려 받는 방법과 (3) 해양예측시스템 운영자들이 휴대전화 단문 메시지 서비스(Short Message Service)를 이용하여 해양예측시스템 수행 시 발생하는 시스템 오류를 신속하게 파악할 수 있는 기능에 관하여 기술하였다. 이들 기본 기술과 운영시스템 구성의 기본 개념은 지역해와 연안 해양 수치예측시스템을 자동으로 운영하는 체계를 구축하는 데 있어서 유용하게 사용될 것이다.
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