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김태성(T. S. Kim),정진욱(J. W. Jung),김용희(Y. H. Kiln),박근우(K. W. Park),이민기(M. K. Lee) 대한기계학회 2003 대한기계학회 춘추학술대회 Vol.2003 No.11
This paper presents the calibration for the parallel typed tilting table. The calibration system needs only simple sensing device which is a digital indicator to measure the orientation of a table. The calibration algorithm is developed by a measurement operator. It eliminates the concern about the poor parameter observability due to a large number of parameters of parallel-mechanism. This paper uses the QR-decomposition to find the optimal calibration configurations maximizing the linear independence of rows of a observation matrix. The number of identifiable parameters is examined by the rank of the observation matrix, which represents the parameter observability. The method is applied to a Parallel-typed Tilting Table and all the necessary kinematic parameters arc identifiable.
영전압 스위칭 풀 브릿지 토폴로지를 기반으로 한 새로운 단일 전력 단 역률개선 AC/DC 컨버터
김태성(T.S.Kim),구관본(G.B.Koo),문건우(G.W.Moon),윤명중(M.J.Youn) 전력전자학회 2003 전력전자학술대회 논문집 Vol.2003 No.7(1)
A new single stage power factor correction(PFC) AC/DC converter based on zero voltage switching(ZVS) fun bridge topology is proposed, Since the series-connected two transformers act as both output inductor and main transformer by turns, the proposed converter has a wide ZVS range without additional devices for ZVS, Furthermore, since there is no need to use an output inductor, the proposed converter features high power density, The proposed converter gives the good power factor correction and low line current harmonics distortion, A mode analysis and experiment results are presented to verify the validity of the proposed converter