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홍원표,양현수,강 용,강덕원 忠南大學校 産業技術硏究所 1988 산업기술연구논문집 Vol.3 No.1
With the growing need of the country's electrical energy from nuclear power generation, the technical importance on the load following has been widely recognized. The load following is being executed by two modes, Boron Regeneration System(BRS) and Boron Thermal Regeneration System(BTRS). Especially, the function of BTRS is solely relied on the efficient use of Boration/dilution in strongly basic resin bed. Therefore, the most influential factors to be investigated in load following operation is to determine the effect of boron concentration in burn-up reactivity and to find the way how to improve the BTRS in order for reusing all the reactor cooling water contaminated by radioactive wastes. This study is mainly devoted to the following purposes : (1) Evaluation of operation data in nuclear power plant about the relation of burn-up reactivity and boron dilution/ boration in BTRS. (2) Diagnostic suggestion on the solving problems in operation of Demineralizer(exchange resin bed).
Cu, CuCl, CuCl_2·2H_2O 의 X-線 K 吸收 Spectrum 들과 Cu 의 X-線 K 放出 Spectrum 의 構造
李悳源,程順和 成均館大學校 1983 論文集 Vol.33 No.-
Cu, CuCl, CuCl_2·2H_2O의 X-線 K吸收端 微細構造와 같은 波長領域에서의 Cu의 放出構造를 50㎝인 曲率반경을 갖는 구부러진 SiO_2(石英)結晶과 함께 Cauchois type으로 배열된 single crystal Spectrameter에 의해 사진 건판위에 얻었으며 그 構造들은 recording microphotometer에 의해 eV의 간격에 따른 曲線으로 그려졌고 諸硏究者들에 의한 자료와 비교조사 했다. 그 結果 Cu에 대한 Cu화합물의 K吸收端 微細構造의 變位를 測定했으며 그 領域에서의 放出構造와의 비교에서 K吸收端의 energy 位置가 Kβ_2 line의 位置와 거의 一致함을 확인했고 諸硏究者들에 의한 實驗 및 理論値와 비교 검토하였다. The K-absorption spectra of Cu, CuCl, CuCl_2·2H_2O were photographed by the single bented crystal Spectrometer which was arranged to the cauchois type. The K-emission spectrum of Cu were photographed too. The extended finestructures of Cu were compared with the previously reported theoretical and experimental values. The diflerence of the Cu K-absorption fine Structures of Cu in the pure Cu metal and Cu compounds were measured. The shift was found on the short wavelength side from K-absorption edge of Cu (non Compound). The Kβ_2 emission line was compared with the K-absorption edge.
배덕진,김주민,김대원 명지대학교 산업기술연구소 2001 産業技術硏究所論文集 Vol.20 No.-
This paper evaluates the performance of TCP/IP in case of real-time control. TCP/IP is well-known as a protocol that can be commonly used in non real-time system because of non-predictability of network latency. To analyse wheter real-time communication is possible or not, a simple system for controlling the motor by using the PID controller is introduced. The computational model of the latency according to each layer is defined. The worst case response time is calculated by the defined model. The minimum control period of the proposed system is determined by its result. Through simulations, we analyse the performance of TCP/IP in case of the real-time control application.
원통 연삭에서 가공 능률 향상을 위한 연삭 저항의 측정에 관한 연구
김원일,이진,이윤경,왕덕현,이상복,이관철,문원길 경남대학교 공업기술연구소 2000 硏究論文集 Vol.18 No.-
본 연구에서는 원통 연삭 가공에서 가공 능률 향상을 위한 연삭 저항을 측정하고자 연삭 가공 중에 발생하는 연삭 저항의 추이를 확인하였고 다음과 같은 결과를 얻었다. 숫돌과 공작물간의 연삭 강성은 공작 속도의 증가에 따라 지지계의 강성이 높은 경우 증가하였고 절삭 깊이와 연삭 숫돌의 속도에는 연삭 강성이 감소하는 경향을 보였다. 또한 총합 강성은 공작 속도, 절삭 깊이 및 연삭 숫돌의 속도 증가에 따라 지지계의 강성이 높을 수록 증가하였다. 연삭기의 강성 변형과 가공 능률에 영향을 주는 값으로 연삭 강성비는 지지계의 강성이 높을 수록 감소하였다. In this study, the measurement of grinding resistance to improve grinding efficiency in cylindrical grinding was studied and the following conclusions could be obtained. Relation grinding wheel and workpiece, grinding stiffness increases according to increase of work speed for high machine stiffness and decreases depth of cut and grinding wheel speed. Also, resultant stiffness increases high machine stiffness according to increase work speed, depth of cut and grinding wheel speed. The values of the effect stiffness deflection in grinding machine, grinding stiffness ratio decrease according to high machine stiffness.