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FNPPI 제어기를 이용한 SynRM 드라이브의 고성능 제어
문주희(Ju-Hui Moon),고재섭(Jae-Sub Ko),최정식(Jung-Sik Choi),정철호(Chul-Ho Jung),강성준(Sung-Jun Kang),장미금(Mi-Geum Jang),정동화(Dong-Hwa Chung) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.7
본 논문에서는 매입형 영구자석 동기전동기가 운전중 발생되는 가진력 특성 해석을 하였다. 모터의 설계에서 극/슬롯수 및 고정자, 회전자 형상 변화에 따른 가진력, 분포력을 측정하였으며, 형상 토폴로지에 따른 매입형 영구자석 전동기의 토크맥동 특성 분석을 FEM을 이용하여 수행 하였다.
문주희(Ju-Hui Moon),고재섭(Jae-sub Ko),최정식(Jung-Sik Choi),강성준(Sung-Jun Kang),장미금(Mi-Geum Jang),백정우(Jung-Woo Baek),정동화(Dong-Hwa Chung) 전력전자학회 2010 전력전자학술대회 논문집 Vol.2010 No.7
An induction motor operated with a conventional direct self controller(DSC) shows a sluggish response during startup and under changes of torque command. Fuzzy logic controller(FLC) is used in conjunction with DSC to minimize these problems. A FLC chooses the switching states based on a set of fuzzy variables. Flux position, error in flux magnitude and error in torque are used as fuzzy state variables. Fuzzy rules are determinated by observing the vector diagram of flux and currents. This paper proposes hybrid FLC for direct torque control(DTC) of induction motor drives. This controller is controlled speed using hybrid FLC. The performance of the proposed induction motor drive with hybrid FLC is verified by analysis results at various operation conditions.
문주희(Moon, Ju-Hui),윤숙희(Yoon, Sook-Hee) 한국간호행정학회 2018 간호행정학회지 Vol.24 No.4
Purpose: The purpose of this study was to identify factors influencing patient safety nursing activities of nurses working in long-term care hospitals. Methods: The participants were 126 nurses working in 8 long-term care hospitals in B city. Data were collected from June 26 to July 10, 2017. SPSS/WIN 23.0 was used for analysis with t-test, ANOVA, Scheffé test, Pearson correlation coefficients, and hierarchical multiple regression. Results: The factors influencing patient safety nursing activities in participants were general characteristics, career in present long-term care hospital, (β=-.23, p=.008), safety control (β=.29, p=.002) and intention to report (β=.19, p=.037); on the personal side, informal communication (β=-.31, p=.005) for the organizational side. These factors contributed 39% of the total variance in patient safety nursing activities. Conclusion: In the organizational dimension of long-term care hospital, formal communication channels should be strengthened to officially direct or report patient safety rather than using informal communication. In order to improve the sense of safety control, which is a personal side of long-term care hospital nurses, it is necessary to provide awareness and education about the continuous safety control and positively prepare the reporting atmosphere to increase long-term care hospital nurses" intention to report.
NN-PI 제어를 이용한 고성능 하이브리드 건조시스템 개발
고재섭(Jae-Sub Ko),최정식(Jung-Sik Choi),강성준(Sung-Jun Kang),백정우(Jung-Woo Baek),문주희(Ju-Hui Moon),김순영(Sun-Young Kim),정동화(Dong-Hwa Chung) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.7
This paper proposes drying system using NN-PI control. The drying method that is applied in industry is mainly used hot air drying method which is circulated heated air by generating heat from thermal source. But these methods have problems such as decreasing drying efficiency and waste of energy by low thermal efficiency. Therefore, this paper proposes high efficiency hybrid drying system using near infrared ray(NIR) drying method using halogen lamp and hot air drying method. And PI controller with fixed gain is not well operated in verity operating condition. Therefore, this paper proposes NN-PI controller that is adjusted gain by operating condition. This paper proves validity of proposed drying system through experiment about thermal and humidity of drying system inside.
고재섭(Jae-sub Ko),최정식(Jung-Sik Choi),강성준(Sung-Jun Kang),백정우(Jung-Woo Baek),장미금(Mi-Geum Jang),문주희(Ju-Hui Moon),정동화(Dong-Hwa Chung) 전력전자학회 2010 전력전자학술대회 논문집 Vol.2010 No.7
The drying method that is applied in industry is mainly used hot air drying method witch is circulated heated air by generating heat from thermal source. But these methods have problems such as decreasing drying efficiency and waste of energy by low thermal efficiency. Therefore, this paper proposes high efficiency hybrid drying system using near infrared ray(NIR) drying method using halogen lamp and hot air drying method. And this paper proves validity of proposed drying system through experiment about thermal and humidity of drying system inside.
유도전동기의 최대토크 제어를 위한 인공지능 PI 제어기 개발
강성준(Sung-Jun Kang),고재섭(Jae-sub Ko),최정식(Jung-Sik Choi),백정우(Jung-Woo Baek),장미금(Mi-Geum Jang),문주희(Ju-Hui Moon),정동화(Dong-Hwa Chung) 전력전자학회 2010 전력전자학술대회 논문집 Vol.2010 No.7
The maximum output torque developed by the machine is dependent on the allowable current rating and maximum voltage that the inverter can supply to the machine. Therefore, to use the inverter capacity fully, it is desirable to use the control scheme considering the voltage and current limit condition, which can yield the maximum torque per ampere over the entire speed range. This controller is controlled speed using artificial intelligent PI(AIPI) controller. Also, this paper is proposed control of maximum torque per ampere(MTPA) of induction motor. The performance of the proposed induction motor drive with maximum torque control using AIPI controller is verified by analysis results at dynamic operation conditions.