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유연운,김태열,장원홍,김성우,임종봉,Yu, Yeon-Woon,Kim, Tae-Yeol,Jang, Won-Hong,Kim, Sung-Woo,Lim, Jong-Bong 한국군사과학기술학회 2011 한국군사과학기술학회지 Vol.14 No.2
Avionics system tends to be designed to have the integrated architecture, and it is getting difficult and complex to verify the flight-critical function because of sophisticated structure. In Korean Utility Helicopter, mission computer acts as the MUX Bus Controller to handle the data from both communication, identification, mission/display and survivability equipment inside Mission Equipment Package and aircraft subsystems such as fuel system and electrical system while it is interfacing with Automatic Flight Control System and Full-Authority Digital Engine Control via ARINC-429 bus. The Flight Displays which is classified as flight-critical function in aircraft is implemented on Primary Flight Display after mission computer processes data from AFCS in order to generate graphics. This paper defines the flight-critical function implemented in mission computer for KUH, and presents the static and dynamic test procedures which is performed on System Integration Laboratory along with Playback Recorder prior to flight test.
WBS 및 PBS를 활용한 연구비 계상 시뮬레이터 구현
유연운,김환우 한국방위산업학회 2018 韓國防衛産業學會誌 Vol.25 No.2
The personnel cost and consumable account for approximately 85 percent of the total research budget in Civil-Military Technology Cooperation project. However, it’s very difficult to ensure if the personnel cost and consumable are estimated properly based on the actual necessities. In this paper, we proposed the data input structure of the personnel cost and consumable that allows the actual estimation of research budget with the application of WBS & PBS. Also, by assigning the specific cell data of the proposed input structure, the budget simulator is implemented to output the detailed data on an item base, company base, and fiscal year base. In using simulator, the time to verify the research budget could be reduced to 1/10. 민군기술협력사업의 연구비에서 인건비와 재료비가 차지하는 비중은 대개 85% 정도이다. 그러나 인건비와 재료비가 실소요량에 근거해서 산정됐는지 판단하는 것은 어려운 실정이다. 본 논문에서는 업무분할구조 및 제품분할구조를 적용해서 연구비의 인건비와 재료비를 산정할 수 있는 인건비 및 재료비 항목의 입력구조를 제안하였다. 또한, 제안한 입력구조의 셀 데이터 할당으로 비목별, 기관별, 연차별 연구비가 산출되는 시뮬레이터를 구현하였다. 연구비 편성 시뮬레이터를 적용하여 연구비 편성 검증시간을 1/10 수준으로 절감하게 되었다.
유연운(Y.W. Yu),김종만(J.M. Kim),이창구(C.K. Lee),김성중(S.J. Kim) 대한전자공학회 1992 대한전자공학회 학술대회 Vol.1992 No.10
The PID controllers which is widely used in the process industry are poorly damped when the dynamic process contains significant dead_time or when there are random disturbances acting on the plant. GPC is known to be more superior than conventional self_tuning algorithm in overcoming above problem and prior choice of model order. In this paper, We propose the method which determine the parameter of PID controller from minimization of GPC criterion. The controller has emplicit scheme which is comprised of parameter estimation and PID control design. Simulation results show the performance of the proposed self_tuning PID controller.