마이크로프로세서를 이용한 서보모터의 정밀위치제어

김춘삼 三陟大學校 産業科學技術硏究所 2000 産業科學技術硏究論文集 Vol.5 No.-

In this paper, It is study about control of digital PWM inverter using AC motor. Main controllers are 80C196MC and 80C196KC Intel. Almost software is used in the paper because adjustment and development are easy.

先進國型 簡易通關癤次 方向에 관한 硏究

李春三,金信雄,鄭祥植 청주대학교 경상대학 1987 經商論叢 Vol.28 No.-

광연대 측정의 원리와 응용

노희삼,홍사용,류지욱,이춘우 공주대학교 기초과학연구소 2000 自然科學硏究 Vol.9 No.-

광연대 측정의 기본 원리와 몇 가지 응용을 기술하였다. 광 연대측정은 결정체의 결함이 외부 에너지원으로부터 자극을 받아 여기된 전자를 구속할 있으며 구속된 전자는 열이나 빛과 같은 외부 자극에 의해 바닥 상태로 전이되며 이 때 빛을 발생하는 원리를 이용한다. 광연대 측정은 몇 십년 단위부터 몇 십만년 단위의 연대 측정이 가능하며 고고학적 지질학적 연구에 적합하다. The basic theory of the luminescence dating and its applications is described. The optical dating utilizes that crystal defects can trap electrons excited by natural radioactivity and give luminescence when external stimulat'ion such as light and heat, is applied. The range of the optical dating is from a few decades to hundreds of thousand years, which is useful for both archeological and geological dating. There are some commercially available systems, which automate the measurements.

상태 관측기를 이용한 유도전동기의 정밀 속도제어

金春杉 三陟大學校 1998 論文集 Vol.31 No.1

This paper is discussed induction motor accuracy drive using state observer. optimal PI control are applied to servo system. But the measurement noise, modeling-error and disturbance of servo are not compensated efficiently. So a theorem is required to have robustness for the measurement noise and disturbance. This paper is among the researches of solving these problem. In this paper, proposed is the method of designing a state observer taking account of the ability of disturbance and noise attenuation. state observer is confirmed by computer simulation and experiments. The control system is digitally implemented with DSP.

리럭턴스 토오크를 이용한 영구자석 전동기의 약계자 제어기법

金春杉 三陟大學校 1998 論文集 Vol.31 No.1

In this paper describes the current controlled PWM technique of IPM synchronous motors for a variety of speed control applications. The IPM synchronous motors have saliency, in which the q-axis inductance is larger than the d-axis inductance. As a consequence, there exists a reluctance torque component. Thus when this component is added to the torque component producted by the stator currents and the air-gap flux density, IPM motor drives are readily applicable where full torque is required up to full to base speed. This paper reviews the operation of the IPMSM drives when they are constrained to be within the permissible envelope of maximum inverter voltage and current to produce the rated power and to provide this with the highest attainable rotor speed. Simulation results and experimental results are given and discussed.

Prospidin이 Mouse의 간장에 미치는 영향

이규식,정호삼,이민형,백두진,기춘석 한양대학교 의과대학 1986 한양의대 학술지 Vol.6 No.1

Prospidin, a new alkylating agent, has antimitotic and anticancer effect. Incubation with prospidin increases the stability of DNA and suppresses the incorporation of uridine into RNA by 15-20 percent. Prospidin is cytostatic for suspension culture and cells are blocked in G₂ phase of the cell cycle. The authors have demonstrated the effect of prospidin on the liver of mice histologically and histochemically and observed the cellular changes, loss of pyroninophilic granules and accumulation of fat in the hepatic parenchymal cells. Sixty-five healthy mice of ICR strain, average weight being 20g, were divided into two groups; control and prospidin-treated groups. All experimental animals were administered foo and water ad libitum. Animals of the prospidin-treated groups were administered prospidine 500mg per kg of body weight intraperitoneally fter dilution in the water for injection. Animals of the control group were administered only water for injection. Prospidin treated animals were sacrificed at intervals of 6, 12, 24, 36 and 48 hours after administration of prospidin. Histological preparations were made by way of hematoxylin and eosin stain for the cellular changes, methyl green-pyronin stain for pyroninophilic granules and oil red O stain for fat accumulation in the mouse liver. The results obtained are as follows. 1. Cellular swelling associated with vesicular formation were observed in the hepatic parenchymal cells of entire hepatic lobule at 24 and 36 hours after administration of prospidin. 2. A marked reduction of the pyroninophilic granules were observed in the hepatocyte of he whole hepatic lobule at 24, 36 and 48 hours following drug administration. 3. Fat deposits in the hepatic lobule were seen at 36 hours after administration of prospidin. It is suggested that prospidin acts as a cytotoxic agent and causes cellular swelling with vesicular formation, loss of pyroninophilic granules, and fat accumulation in the parenchymal cells of the liver.

대전광역시 남·녀 노인의 레크리에이션 활동 실태

김동건,민춘기,이용인,이종길,박영숙,염동삼 忠南大學校體育科學硏究所 1997 體育科學硏究誌 Vol.15 No.1

The Purpose of this study was to investigate the current conditions of recreation activities of male and female olders in Taejeon. 416 (197 males and 219 females) olders above 60 years old were selected as subjects and examined by face-to-face interview for this study. The collected data were analyzed using such statistical methods as frequencies and crosstabulation with Chi-suare tests. The major findings in this study were summarized as following: there were significant differences between male and female olders; male olders participated the most in tourism and entertainment, while female olders the most in hobbies and social activities; the purpose of male olders' activity was to maintain their health, but in the case of females it was use of leisure and self-actualization; male olders participated more frequently in recreation activities than female olders significantly.

축전지용 전압형 PWM 컨버터의 전류 제어에 관한 연구

우정인,김춘삼,진해중,허태원 東亞大學校 附設 情報通信硏究所 1997 情報通信硏究所論文誌 Vol.5 No.1

A voltage source PWM converter based on lossless resonator and a source current control system are proposed in this paper. It is proved that steady-state deviation reduces to zero from the transfer function of source current control system, owing to the lossless resonator. The system can be controlled by the feedback control only, because of no need to use a feedforward control in the proposed a source current control system. Therefore, as using lossless resonator, control system can be simply made up. Simulations are described in the case of difference between source current and source current reference.

파라메타 변동에 강인한 유도전동기의 센서리스 벡터제어

우정인,김동완,김춘삼,박지호 東亞大學校 大學院 1999 大學院論文集 Vol.24 No.-

본 논문에서는 파라메타의 변동에 기인한 유도전동기의 성능저하를 개선하기 위한 강인한 센서리스 벡터제어를 제안한다. 동일차원 상태관측기를 구성하여 고정자전류와 회전자자속을 추정하고, 추정된 고정자전류와 회전자자속을 이용하여 속도 동정기를 구성한 후 회전자의 속도를 추정하여 Deadbeat 전류제어를 수행한다. 또한, 회전자속도의 추정에서 고정자전류 오차는 가변극배치 동일차원 상태관측기에 의해서 보상되며, 회전자자속 오차는 고정자전류를 입력으로 하고 회전자자속을 출력으로 하는 모델을 설정하여 이 모델에 파라메타 변동에 강인한 슬라이딩 관측기로 구성된 회전자자속 관측기를 부가한다. 이 회전자자속 관측기에서 회전자자속의 지령치와 추정값 사이의 오차를 보상하므로써 속도 동정기에 강인성을 부여하고, 정확한 Deadbeat 전류제어의 상태예측을 수행한다.

운동프로그램이 노인의 평형성과 근력에 미치는 영향

박인기,이명수,염동삼,민춘기 忠南大學校體育科學硏究所 2002 體育科學硏究誌 Vol.20 No.1

The purpose of this study was to investigate the effects of eight weeks of muscular training and aerobics exercise on the balance and muscular strength elderly women. 18 subjects were divided into the control group and the execise group. The control group maintained their usual activities and the participated in the program that was designed to muscular training and aerobics exercise. ANOVA revealed significant differences between groups for the balance and the strength. The trend observed in the balance and strength between groups suggest that exercise continued over a longer period of time may increase balance and muscular strength.