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기계체조선수(器械體操選手)의 운동적성(運動適性)에 관(關)한 연구(硏究)
李商鍾(S.J.Lee),柳根林(K.L.Yoo) 한국체육학회 1974 한국체육학회지 Vol.9 No.-
The Purpose of this study is to make Item to evaluate Gymnastics player-s physical Fitness.The Sample ware high School boy’s and girl-s Team, Collagiate male and Female Team and Munich olympic Korea national Team and Japanese national Team.The investigators Constructed physical fitness test Items.The test Items were administrated an data were Collected and Statistically analyzed.1. Gymnastics player’s physial Fitness Tes Itemst were recommended1) The Test of physiqueheight.wedight.Chest Circumference.Length of the upper limb.Length of the lower limb.2) Physical Fitness Test100 metr run.1,500 meter run.Forword Flexion of truuk. (Standing)Vertical Jump.Pull-ups.3) Skill TestBridge.L-Type Suppot.Cross-Type Support.Back cntinue Somer-Sault. (Male)Continue Back Hand-Spring. (Famale)Foot toe balance.2. Evalution for norms are listedin table-five.
고주파 공진형 인버터 X선 장치의 단시간 출력특성에 관한 연구
이성길(S.K.Lee),임홍우(H.W.Lim),이상일(S.I.Lee),조금배(G.B.Cho),백형래(H.L.Baek) 전력전자학회 1998 전력전자학술대회 논문집 Vol.- No.-
This paper deals with a characteristic of output for high frequency resonant inverter type x-ray generator in short exposure time. In the same tube-voltage, the waveform is stable in long exposure time (200msec) but more decreasing exposure time (50msec), the waveform is distorted. The ripple factor of tube-voltage waveform distorted more and more increase tube-voltage and in this case output is also unstable. High-frequency resonant inverter type X -ray generator using PSU source which introduced in resent is stable tube-voltage waveform and low ripple factor.<br/> <br/>
김성윤(S. Y. Kim),이상일(S. L. Lee),김유택(Y. T. Kim),김성동(S. D. Kim),이용선(Y. S. Lee),이영호(Y. H. Lee) 한국유체기계학회 2004 유체기계 연구개발 발표회 논문집 Vol.- No.-
LabVIEW is mostly preferred to use in experiment, measurement and control as one of the useful thing in America and Europe. So, We tried performance experiment of a single-stage closed-type centrifugal pump by using the LabVIEW. The pump rpm and the shaft torque are measured by rpm sensor and torque sensor. The test pump's maximum rpm, head, ㎾ are 1,750m, 13m, and 1.5㎾, respectively. The casing is made up with transparency acrylic for confirmation the flow patterns. We installed experimental equipment for air water two phase flow. This paper tries to analyze the single-phase flow characteristics through this air water two phase flow experimental apparatus. The performance results of a single-stage closed-type centrifugal pump satisfied reappearance and coincide well with head and coefficients according to the change of rpm.
엘리베이터구동용 영구자석형 동기전동기의 속도제어에 관한 연구
유재성(J.S.Yu),김이훈(L.H.Kim),최기준(G.J.Choi),윤관철(K.C.Yoon),정무택(M.T.Jung),김연충(Y.C.Kim),이상석(S.S.Lee),원충연(C.Y.Won) 전력전자학회 2003 전력전자학술대회 논문집 Vol.2003 No.7(1)
This paper presents the speed control of the surface-mounted permanent-magnet synchronous motors (SMPMSM) for the elevator drive The elevator motor needs to be a compact and slim type Essentially, the proposed scheme uses a vector control algorithm for a speed and torque control This system is implemented using a<br/> high speed 32-bit DSP (TMS320C31-50), a<br/> high-Integrated logic device FPGA (EPF1OK10-TI144-3)to design compactly and Inexpensively<br/> The proposed scheme is verified through digital simulation and experiments for a three-phase 133kW SMPMSM as a MRL(MachineRoomLess) elevator motor in the laboratory finally, experiment of the test tower was performed with a 48kW PWM converter-Inverter system for a high-speed elevator