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박범순,최일규,김지철,전동익,이상철,오화석,강민영,Park, Bumsoon,Choi, Ilgue,Kim, Jichul,Cheon, Dongik,Lee, Sangchul,Oh, Hwa-Suk,Kang, Minyoung 항공우주시스템공학회 2009 항공우주시스템공학회지 Vol.3 No.4
The first purpose of this study is to develop a GCS(Ground Control System) by using RF(Radio Frequency) wireless communication equipments for UAV(Unmanned Aerial Vehicle). The second goal is to develop an antenna tracking system operating automatically. UAV receives flight data from a RF wireless system. So the role of antenna tracking system is very important to keep good communication state between UAV and GCS. GCS can check flight data and display a aviation state of UAV in real-time. The flight data displayed in real-time by GCS include the latitude, longitude, altitude, speed and so on. Experiments that measure a communication range and reliability are needed to develop a RF wireless communication system.
SGCMG를 이용한 단축 불안정 시스템의 안정화 제어 기법 개발
이준식,이준용,유지훈,김지철,전동익,오화석,Lee, Junsik,Yi, Junyong,Yoo, Jihoon,Kim, Jichul,Cheon, Dongik,Oh, Hwa-Suk 항공우주시스템공학회 2013 항공우주시스템공학회지 Vol.7 No.4
Control Moment Gyroscope(CMG) is one of the most efficient momentum exchange devices for satellite attitude control and essential device for agile maneuver system. This paper presents the details of a designed Single Gimbal CMG with a constant speed momentum wheel and single axis attitude control unstable to stable. In order to keep the naturally unstable equivalent point, it should be controlling the gimbal constantly. The experimental data are compared with theoretical result and requirements are used to verify their performance specifications.