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정성윤(Jung Sung-Youn),김형인(Kim Hyung In),정도원(Jung Do Won),조택선(Cho Taek Seon) 한국철도학회 2008 한국철도학회 학술발표대회논문집 Vol.- No.-
The collection of KTX trainset fault code is made by DEP software. We can improve software function and update data after understanding DEP software function and software structure. For the improvement of trainset function and its performance, the same improvement of performance and structure change as DEP software, which collects and analyzes train"s fault information, are required. Accordingly, we made a research for functional strucfure of KTX fault code collection software, STR3F, variable declaration through Script.rxr file and code analysis method and proceeded research for realizing more improved user environment of DEL software and fault analysis method.
LQG/LTR 설계 방법을 이용한 자기 부상 시스템 제어에 대한 연구
조택선,이건복 崇實大學校 生産技術硏究所 1992 論文集 Vol.22 No.-
In this work, a theoretical model for the study of nonlinear dynamics of a electro-magnetic levitated system is presented. The system can be described by a set of three first order nonlinear ordinary differential equations. After linearizing the system around an equilibrium point, open-loop instability is confirmed and the, feedback system is designed using the linear quadratic gaussian with loop transfer recovery(LQG /LTR) design methodology so as to meet design specification in the frequency domain. Computer simulations are carried out and the results show that LQG/LTR design recovers considerable stability-robustness.