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남양희,주재율,장성호 한국항공우주학회 2013 한국항공우주학회 학술발표회 논문집 Vol.2013 No.4
비행조종컴퓨터는 비행조종시스템의 핵심 구성요소로서 각종센서로부터 항공기의 운동상태를 입력받고, 조종면의 제어명령을 생성하여 복잡한 조종문제를 제어법칙으로 해결할 수 있게 해준다. 이를 위해 비행조종컴퓨터는 디지털 비행제어 기술이 필요하고, 안정성의 증대를 위해 다중화 기술이 필요하다. 특히 스마트무인기와 같은 틸트로터 무인기에 탑재되는 비행조종컴퓨터는, 헬리콥터 모드와 프로펠러 모드일 때의 각각의 환경규격에 맞게 설계/제작 되고, 시험되어져야 한다. 본 논문에서는 이러한 요구사항에 맞게 설계된 이중화 비행조종컴퓨터에 대해 기술하였다. As DFCC is a core component of flight control system, DFCC receive the aircraft status from the sensors and generate the control command for actuator to solve the complex control problem by the control law. For doing this, the digital control technology for aviation must be required. Especially, the DFCC equipped with the Tilt rotor UAV such as SMART UAV must consider the environmental standard when the aircraft is in helicopter mode or in propeller mode. In this paper, we deal with dual flight control computer designed to satisfy this requirement.
VARIOUS COMPACT-TYPE PROPERTIES BETWEEN ω-BOUNDEDNESS AND PSEUDOCOMPACTNESS
CHO, MYUNG HYUN,KIM, JUN-HUI,SEO, HYO SUN The Honam Mathematical Society 2004 호남수학학술지 Vol.26 No.2
On the analogy of total countable compactness, we study interesting subfamilies in the class of pseudocompact spaces. We show relationships between totally pseudocompact spaces, sequentially pseudocompact spaces, and DFCC spaces. We also prove relationships among densely ${\xi}$-pseudocompact, ${\xi}$-pseudocompact, and countably pracompact spaces. As a productive result on countably pracompact spaces, we will prove that if X is a countably pracompact space and Y is a countably pracompact ${\kappa}$-space, then $X{\times}Y$ is count ably pracompact.
RELATIONSHIPS AMONG SPACES OF META-LINDELÖF PROPERTY END STAR-LINDELÖFNESS OF σ-PRODUCT SPACES
CHO, MYUNG HYUN,KIM, JUN-HUI The Honam Mathematical Society 2004 호남수학학술지 Vol.26 No.2
In this paper, we further enrich the theory of starcompactness properties by clarifying relationships between various types of weak covering properties and starcompactness and starcompactness-like properties. We also study star-$Linde{\ddot{o}}fness$ of ${\sigma}$-product spaces.