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金炯來 건국대학교 부설 산업기술연구소 1976 논문집 Vol.2 No.-
In this paper the counters and the decoder circuits are designed theoretically and a digital clock is fabricated by using I.C. The digital clock consists of a crystal osciallator, a divider, counters, decoders, 7-segments and etc.. It is found that the time error of the digital clock is less than 30 seconds in a month. It is good agreement with the theory. It is concluded that a digital clock be manufactured not only for getting a excellent accuracy but also for having a good stability.
金炯來 건국대학교부설 산업기술연구소 1978 논문집 Vol.4 No.-
Recently the digital electronic engineering is effected on all fields of the engineering and it is a current tendency that the electronic devices are digitaling. In the paper, Ternary logic theory, a important base of digital electronic engineering, is threated and Ternary logic adder are designed and arranged. Adder circuits which are composed of one NOT gate, DOUBLE NOT gate and a Gate Sellector circuit are analyzed theoretically. It is observed that the circuit, designed have a good operational stability and are simplified in circuit configuration, for the half and the full adder.
자주발진 DC/DC콘버터의 일반적인 해석과 실용적인 설계
金炯來 건국대학교 부설 산업기술연구소 1982 논문집 Vol.7 No.-
This paper deals with a general analysis of self oscillating DC to DC converter which can be modeled by single-loop nonlinear feed back system. For practical design, approximate equations which govern the switching frequency, duty cycle, DC error, and peak to peak output ripple is obtained. The experimental results of the self oscillating DC to DC converter performance are as follows; 1. Switching frequency of self oscillating DC to DC converter is almost never changed by load regulation. 2. Output voltage regulations are within ± 0.2[%]. 3. Maximum converting efficiency is 89.2[%].
超小型 電子計算機 建國-1의 인터페이스에 關한 硏究(Ⅰ)
金炯來 건국대학교 1982 學術誌 Vol.26 No.2
Since Intel 4004 microprocessor was introduced in 1971, microprocessors have been widely used in the fields of the measurements, the consumer electronics and especially the controls. A new era of the scientific culture is realized by microprocessors. In this paper, the studies are concentrated oil the interface of microcomputer system KON-KUK-1 with a black and white televison instead of an exclusive C.R.T monitor. Microcomputer system KON -KUK-1 uses M6800 microprocessor. T. V interface is consisted of an address/data buffer part, a video RAM and a character generator part, a horizontal and a vertical synchronized circuit part and a shift register part. Test program are drawn up and executed for the sake of confirming the behavior of T. V interface board. As a result, it is proved that T.V can be used as I/O device for microcomputer system. Moreover, It is found that test program is adopted simply to other microcomputer and microcomputer system.
신경회로망을 이용한 평면좌표계형 로보트구동용 교류서보전동기 제어기
김평호,백형래 조선대학교 에너지.자원신기술연구소 1999 에너지·자원신기술연구소 논문지 Vol.21 No.2
This paper describes the controller for the improving speed control the AC servo motor. The microprocessor provides an output to the difference in command. The servo- system improves the characteristics of speed control. When the motor is running at the same speed as set by the reference signal, the speed encoder also provides a signal of the same frequency. Thus, the microprocessor controlled digital techniques enable to realize the flexible performance and control which was possible with time constant. We can know that PI control using neural networks by 80196 can control efficiently speed of AC Servo motor. Finally experimental results prove excellent performance of this control system. The system can be adaptable to CNC machine.
관계형 데이터 베이스 관리시스템을 사용한 지식 베이스시스템 설계에 관한 연구
김형래,임기영 建國大學校 附設 産業技術硏究所 1991 논문집 Vol.16 No.-
This paper is described on an approach to string and manipulating Horn clause rules in a relational knowledge base (KB) system. We transformed into a relational table without a recourse to semantics and how their manipulation can be performed in the knowledge itself. The knowledge is held in the form of relations in the knowledge base that is consisted of tree types of tables; the decision table, the pridicate table and the term table. So we construct a knowledge base system for developing decision support systems of expert systems.
金炯來 건국대학교부설 산업기술연구소 1977 논문집 Vol.3 No.-
In this paper, the 8-bit D/A Converter is designed and fabricated. D/A Converter which is most important in digital systems is consisted of a register, a Analog switch, a level amplifier, a ladder network and a Operational amplifier and these parts are mentioned too. In this experiment, resistor in ladder network is used within 0.05% to get a high accuracy. It is found that error of D/A Converter is less than 0.019% and it means a good agreement with a theory. It is expected that D/A Converters are many kinds used in all Digital systems and Analog system, so it needs more researches that D/A Converter can be to get a excellent accuracy and a fast conversion speed.
計數型 電子時計를 이용한 計數型 自動時報器의 製作에 관한 硏究
金漢星,金炯來 건국대학교 1977 學術誌 Vol.21 No.2
In the past fifteen years, the digital Electronics has established itself as the great infulence on all areas of elctronic engineering and electronic design is depend predominatly upon the use of integrated Circuits. In this thesis, the Automatic digital Timer is designed and is manufactured by using A digital clock. A Digital colck which is consist of Crystal Oscillator, frequency devider, Counters, Decoders, 7-Segments and etc. is designed also and is fabricated by means of integrated Circuit. Counters and Decoders which are very important in digital electronics are mentioned in this paper too. It is found that the results of this experiment is good agreement with the theory and the time error of the digital clock is less than 0.001%.