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이동춘 한국정보기술전략혁신학회 2000 情報學硏究 Vol.3 No.2
본 논문에서는 단말기가 빈번히 이동함에 따른 등록정보를 지역적으로 분산하여 데이터베이스간 신호 트래픽을 줄이고 수신측 단말기의 위치를 캐슁하여 재사용함으로써 특정 단말기에 대한 통화율이 높을 경우 신속한 호접속을 제공하여 한정된 채널의 블록율을 줄인다. When a terminal frequently crosses a RA or a call originate in a boundry cell, HLR should be updated or queried. Frequent DB accesses and message transfers may cause the HLR bottleneck and degrade the system performance. This paper propose scheme to solve the HLR bottleneck problem and reduce to call registration cost and call tracking cost in wirless networks.
이동춘,신현재 한국산업경영시스템학회 1991 한국산업경영시스템학회지 Vol.14 No.24
In the FMS design, the important points are the selection of parts and the determination of configuration. The common approach method which solve the selection of parts are the determination of configuration has improved that the two points are simultaneously. This study finds the best method which parts combination and configuration are satisfied at the same time. And the optimal replace time of equipment under limited budget on the view Point of engineering. economy.
유도전동기 구동을 위한 전류형 PWM 컨버터 및 인버터 시스템
이동춘 대한전자공학회 1996 전자공학회논문지-B Vol.b33 No.5
In this paper, a novel control strategy of curretn source PWM converter and inverter system for induction motor dirves is proposed. The PWM converter controls line current to be sinusoidal and makes input power factor unity. In the inverter part, a minor voltage control loop is incorporated in the current control looop in order to suppress unstale resonance between the filter capacitor and the motor leakage inductance and to keep the stator voltage under the rated value. In additon, the modulation index control of the inverter currents ripples and inverter loss. With the proposed algorithm, both high dynamic responses and satisfactory static performance can be obtained.
이동춘,황규성,이임순 한국산업경영시스템학회 1989 한국산업경영시스템학회지 Vol.12 No.20
This paper tries to define and analyse the subjective responses on noise environment according to operators continuous service in the field. The hypothesis of this paper is that the longer they serve in the same field, the more they feel seriously on noise effects. A predesigned enquete was handed out to 500 operators, and performed Friedman Test in order to check the hypothesis Concludingly, this paper accepts the hypothesis by year of continuous service-questionaire number analysis.