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Young-JinLee,Young-JinYoon,Dong-HeeYu,Yong-HoKim,Man-HyungLee 한국항해항만학회 2002 한국항해항만학회지 Vol.26 No.6
Path planning method for an autonomous mobile robot is considered. For the practical applications, the simplified local potential field methods are applied under the constraints of the driving condition. To improve the performance, the fuzzy-approximated linear function method is also used.
A Study on the Sensorless PMSM Control using the Superposition Theory
이영진,김영호,이만형,Young-JinYoon 한국정밀공학회 2003 International Journal of Precision Engineering and Vol.4 No.2
This study presents a solution to control a PMSM without sensors. The control method is the presented superposition principle. This method of sensorless theory is very simple to compute estimated angle. Therefore, computing time to estimate angle is shorter than other sensorless methods. The use of this system yields enhanced operations, fewer system components, lower system costs, efficient energy control system designs and increased efficiencies. A practical solution is described and its results are given in this study. The performance of a sensorless architecture allows an intelligent approach to reduce the complete system costs of digital motion control applications using the cheaper electrical sensorless motors. This paper deals with an overview of solutions in the sensorless PMSM control applications, whereby the focus will be the new sensorless controller and its applications.
Seung Min Oh,강민규,Young Ho Do,강종윤,Seok-JinYoon,Sahn Nahm 한국전기전자재료학회 2011 Transactions on Electrical and Electronic Material Vol.12 No.5
Lead zirconate titanate (PZT) films were fabricated on Pt/Ti/SiO2/Si substrate by the sol-gel method using a sol containing poly(N-vinylpyrrolidone) (PVP). PVP in alkoxide solutions can suppress the condensation reaction in gel films during heat treatment, and increase the viscosity of alkoxide solutions. Single-phase PZT films as thick as 1 μm were deposited by repetitive coating with successive third-step heat treatments at 150℃, 350℃ and 650℃. After heat treatment, the films were crack free, and optically transparent. As a result, we demonstrated a PZT film with a PVP molar ratio of 0.5, which has a permittivity of 734, a dielectric loss of 0.042, a Pr of 40.5 μC/cm2 and an Ec of 156 kV/cm.
진균성 질염의 한약 훈증 치료에 대한 체계적 문헌 고찰
박경덕 ( Kyung-dug ),배주은 ( Park Ju-eunbae ),윤영진 ( Young-jinyoon ) 대한한방부인과학회 2018 大韓韓方婦人科學會誌 Vol.31 No.3
Objectives: The purpose of this study is to identify the effectiveness of fumigation treatment, provide a clinical basis for fumigation therapy, and develop treatment protocols through consideration of treatment methods and herbal medicines. Methods : We searched for randomized controlled clinical trials using fumigation treatment on mycotic vaginitis in 8 electronic databases such as EMBASE, Pubmed, and CNKI. The results of the studies were analyzed and the risk of bias was assessed by using Cochrane risk of bias tool. A meta-analysis was performed to reveal the effectiveness of fumigation compared to control treatments. Results : We finally selected 5 studies among 54 articles according to inclusion criteria and exclusion criteria. In all selected studies, herbal fumigation was more effective than any control treatment and all the studies were statistically significant. Conclusions: The study provides a basis for applying fumigation treatment to patients with mycotic vaginitis and helps developing a treatment protocol of caring patients of mycotic vaginitis. But the limitation of this study is that the number of studies included is small and quantitative synthesis of all results has not been achieved.