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박경균(K.K.Park),박일경(I.K.Park),최연철(Y.C.Choi),안태환(T.H.Ahn),이운성(W.S.Lee),김정하(J.H.Kim) 한국자동차공학회 1997 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1997 No.6_2
This paper describes the motion system developed for a driving simulator, consisting of a six degree of freedom Stewart platform driven hydraulically. The hardware has been developed based on careful consideration of target performance, motion envelope, driving scenarios, etc. The drive logic, consisting of an washout algorithm, inverse kinematic analysis, and a control algorithm, has been developed and applied for creating high fidelity motion cues.<br/>
RPWM기법을 이용한 3상 승압형 컨버터 전도노이즈 저감
정태환(T.H.Jung),안정준(J.J.Ahn),이정호(J.H.Lee),원충연(C.Y.Won),김영석(Y.S.Kim),최세완(S.W.Choi) 전력전자학회 1999 전력전자학술대회 논문집 Vol.- No.-
In this paper Random PWM method for reducing conducted EMI in single switch three phase discontinuous conduction mode boost converter is presented. Random PWM control, by which the switching noise spectrum is smoothed and its level is reduced, is proprsed. Experimental results are verified by converter operating at 300V/1kw with 5%~30% white moise input.
Electroforming을 이용한 PDP용 EMI 메시 개발
권혁홍(H. H. Kwon),범민욱(M. W. Beom),임성룡(S. Y. Lim),황춘섭(C. S. Hwang),박동식(D. S. Park),이태환(T. W. Lee) 한국생산제조학회 2011 한국생산제조학회지 Vol.20 No.1
There are a lot of PDP TV for a plasma discharge pulse voltage generated by the use of electromagnetic waves. EMI mesh film is near Infrared ray caused by malfunction of the remote control intended to prevent this phenomenon. In this study, the formation of fine pattern by making the mold is imprinted on the film sheet. EMI mesh film has been granted by filling in the conductive material region imprinted with electroforming in the manufacture of resistance. The fine patterns fabricated with electroforming facility thickness of homogenization process technology were established to optimize the working conditions.
이용호(Y.H.Lee),이연숙(Y.S.Lee),신용돌(Y.D.Shin),문기원(K.W.Moon),노태환(T.H.Noh),김희중(H.J.Kim),강일구(I.K.Kang) 한국자기학회 1991 韓國磁氣學會誌 Vol.1 No.1
A measurement system for magnetic anisotropy was built. The torque acting on the disc or sperical samples placed in uniform magnetic field was detected with a capacitive transducer which is connected with a transformer ratio-arm bridge. The output of the bridge was amplified with a lock-in amplifier. The cubic anisotropy constant for (100) of 3% Si-Fe was 3.3×10⁴ J/㎥. The calibration for the system was carried out with the shape anisotropy of a thin Ni wire.