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이재웅,장종욱,Lee, Jae-Ung,Jang, Jong-Wook 한국정보통신학회 2018 한국정보통신학회논문지 Vol.22 No.12
무인이동체에 대한 연구가 지속적으로 이루어 져왔다. 현재까지 지속적인 연구의 결과 무인이동체의 상용화 소식이 들려온다. 또한, 다양한 분야에서 무인이동체를 적용해 왔다. 무인이동체를 실내에서 적용시키기 위해서도 또한, 많은 연구가 이루어져왔다. IoT전용 망인 LoRa망을 이용하여 작은 공간인 집이나 혹은 사무실 병원 에서부터 공장까지 LoRa망을 적용한 무인이동체 관제 시스템을 설치하여 무인이동체가 특수한 작업을 할 때, 더욱 효율성을 높여준다. 본 논문은 IoT전용 망인 LoRa망을 이용하여 무인이동체를 하나의 사물로 인식하고, 주변 사물과 소통을 하며 무인이동체가 실내에서 주행에 필요한 정보들을 클라우드 서버로부터 제공 받음으로써, 다양한 문제점들에 대한 해결책을 제시한다. There has been a steady study of unmanned vehicle. So far, continuous research has brought news of the commercialization of unmanned vehicle. In addition, it has been applied in a variety of fields with another industry. A lot of research has been done, too, to apply inert driving indoors. Using LoRa network, which is a network dedicated to IoT, unmanned vehicle control system that is applied to LoRa network from a small space, or from an office hospital to a factory, is installed to increase efficiency when the performs special tasks. This paper presents solutions to a variety of problems by using LoRa network, which is dedicated to IoT, to recognize an unmanned vehicle as a single object, to communicate with surrounding objects, and to receive information necessary for driving indoors from a cloud server.
추진축계정렬 프로그램 개발 및 신뢰성 평가에 대한 연구
이재웅(Jae-Ung Lee),박개명(Kae-Myoung Park),문준식(Jun-Sik Moon),오주원(Joo-Won Oh),전효중(Hyo-Jung Kim),김정렬(Jeon-Ryul Kim),차지협(Ji-Hyub Cha) 한국마린엔지니어링학회 2010 한국마린엔지니어링학회 학술대회 논문집 Vol.2010 No.4
Proper shaft alignment is one of the most important actions during the design of the propulsion system. The stiffness of recently designed marine propulsion shafting has been increasing remarkably, whereas hull structures have become more likely to deform as a result of optimized design of the scantlings and the high tensile steel. hereupon, this paper dealing with introduction of newly developed shaft alignment programme by our society and review its reliability evaluation compare with other alignment programmes.
EV 구동용 120kW 권선계자형 동기 전동기 토크 리플 저감설계
이재웅(Jae-Ung Lee),차경수(Kyoung-Soo Cha),윤명환(Myung-Hwan Yoon),홍정표(Jung-Pyo Hong) 한국자동차공학회 2017 한국자동차공학회 학술대회 및 전시회 Vol.2017 No.11
Recently, as automotive tends to be electricized and leisure space, traction motor of automotive become more important. In addition to price of rare earth magnet is flexible. So nonrare earth magnet traction motor should be studied. This paper presents a design strategy of Wound Field Synchronous Motor(WFSM). The design strategy is that confirm main factors which have an major effect on torque and torque ripple through design of experiments. Then, confirm change tendency of torque, torque ripple and induced voltage through main design factors which are pole arc, thickness of rotor and stator, and eccentricity using response surface methodology. With this strategy, this paper presents an improved model for torque ripple reduction and induced voltage compared to initial model.
회전자 강성을 고려한 자동차 브레이크용 자속집중형 동기전동기의 효율 개선
이재웅(Jae-Ung Lee),정영훈(Young-Hoon Jung),홍정표(Jung-Pyo Hong) 한국자동차공학회 2018 한국자동차공학회 부문종합 학술대회 Vol.2018 No.6
Recently, as electrification of vehicle components is done by vehicle companies, motors of automotive have become more important, Currently, electric motors used in automotive parts use rare earth magnets because of their limited power density and size. Non-rare earth magnet motors should be studied since the price of rare earth magnets can change rapidly in accordance with international circumstances. This paper presents the process of efficiency improvement considering stiffness stability of the rotor structure for Concentrated Flux type Synchronous Motor(CFSM)