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家兎膀胱 Microsome 分劃의 ATPase 活性度에 關한 硏究
嚴鳳燮 최신의학사 1967 最新醫學 Vol.10 No.4
The author studied the effects of Mg++,. Ca++, Na+, K+, and DNP on the ATPase activity of microsomal fraction isolated from rabbit urinary bladder and obtained the following results. 1. The microsomal fraction of urinary bladder contained the Na+-and K+-activated ATPase. The ATPase activity increased with protein content in the microsomal fraction. 2. The maximum ATPase activity was obtained at Na+ concentration of 100 mM and K+ concentration of 10mM, respectively. 3. The ATPase was not activated by Na+ an K+ in the absence of Mg++. 4. The Na+-and K+ activated ATPase was inhibited by Ca++ in the presence of Mg++ 5. The microsomal ATPase of urinary bladder was not effected by DNP. 6. The microsomal ATPase activity of urinary bladder was lower than that of heart or skeletal muscle.
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嚴鳳燮,文相一 울산과학대학 1979 연구논문집 Vol.4 No.-
本 論文은 溫度를 制御하는데 있어서 溫度感知回路에 트랜지스터와 OP Amp를 利用하였으며 Buffer 트랜지스터를 通하여 溫度感知回路와 Heater 制御回路를 結合, 自動溫度制御裝置를 電子回路로 構成 하였다. The automatic temperature control equipments are composed of electronic circuits in order to control temperature difference automatically. A thermistor and an OP amplifier are used in the thermal sense circuit which is connected with the heater control circuit through a buffer transistor.
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嚴鳳燮 울산과학대학 1982 연구논문집 Vol.7 No.1
NFB에 依한 直流電動機의 定速度制御에 關한 것으로 外部의 影響에 關係없이 電動機의 定速度運轉을 하는데 目的이 있으며 그 定速度特性을 調査한 負荷結果 電流가 0-1.6(A) 變化하는 條件下에서 電動機는 定速度를 維持하였다. This study describes a constant speed control system for the D.C. motor using NFB technique. This work will enable the D.C. motor to be driven at a constant speed regardless of any external disturbances. The result obtained through the investigation of the constant speed characteristics is as follows: under the condition of the load currents which vary from zero to 1.6 Ampere, the D.C. motor marked a constant speed.
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F/V 變換器에 依한 直流電動機의 速度制御에 關한 硏究
嚴鳳燮,白森文 울산과학대학 1979 연구논문집 Vol.4 No.2
本 硏究에서는 電動機의 速度를 F/V 變換器에 依하여 DC電壓으로 바꾼 다음 基準電壓과 比較하고 그 差電壓을 位相制御回路에 供給하여 DC分捲電動機의 行하고 開루프 時와 閉루프 時의 速度制御 特性을 比較하였다. This paper is concerned with the speed control of a DC motor After its speed is converted into DC voltage by F/V converter, it is compared with the reference input voltage. The difference voltage fed to the phase control circuit controls the speed of the seperately excited DC motor. The speed control characteristics of both open and closed loop systems are compared.
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엄봉섭 울산과학대학 1998 연구논문집 Vol.24 No.2
본 논문은 교육용 로봇 암 제어기의 회로를 설계하고, 베이직으로 제어프로그램을 작성한 것이다. 제어기의 회로는 스테핑 모터 전용 IC를 사용하였고, PCB 기판을 설계 제작하였다. 스테핑 모터에 공급하는 펄스를 계수하여 위치를 검출하고, 계수된 수 만큼 재공급하는 방식으로 개루프를 구성하여 교육 프로그램을 완성하였다. 기존의 복잡한 회로를 단순화 하여 제작원가를 절감하였고 쉬운 베이직 언어를 사용하므로서 언어를 배우는데 필요한 시간을 단축할 수 있었다. This paper was described about designing of educational Robot Arm Controller and control program using BASIC programming language. The controller was designed by IC(intergated circuit) for only stepping motor, and PCB(printed circuit board) was manufactared by designing The control program was structured in open loop that counts the pulse code encoded to stepping motor and detects the position of robot arm, and computes and repulses the appropriately counted pulse signal to stepping motor. The experimental results of the proposed educational robot arm controller and control program show cost down manufacturing price by simplifying the complicated circuit befor, and reduce the time of studying another language by use of plain BASIC.
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마이크로프로세서에 依한 直流分捲 電動機의 速度制御에 關한 硏究
嚴鳳燮 울산과학대학 1988 연구논문집 Vol.13 No.2
本 論文은 마이크로프로세서를 利用한 直流電動機의 速度制御實驗에 關한 것이다. 마이크로프로세서로 電動機의 實際速度를 測定하고 그것을 願하는 速度와 比較하여 얻어진 誤差를 位相制御回路에 보내서 直流分捲電動機의 速度를 制御하였다. 速度制御特性을 調査한 結果正常狀態誤差를 願하는 速度의 0.43% 以內로 줄일 수 있었다. This paper is a study on the experiment to control the speed of DC motor by making use of a microprocessor. As a procedure of the experiment, we measured the actual speed of DC motor with a microprocessor. And then, the error acquired by comparing the measured value with thr set speed was fed to the phase control circuit, which controlled the speed of the seperately excited DC motor. As a result of the experiment on the speed control chracteristics, we found that the steadystate error could be reduced to the extent of less than 0.43% of the set speed.
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鄭敏秀,嚴鳳燮 울산과학대학 1982 연구논문집 Vol.7 No.1
本 論文은 Plasma 電子 beam 發生裝置를 試作한 過程과 實際 應用에 있어 가장 널리 쓰이고 있는 雰圍氣 가수인 H_2를 採用하여 電子 beam의 電氣的 特性에 미치는 bias 電壓 및 磁界의 영향에 對하여 調査한 것이다. In this paper, a plasma electron beam generator is designed to investigate the effects of the bias voltage and magnetic fields, which effect the characteristics of electron beam, under the presence of atmospheric gas, H_2.
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