一般電氣實習의 效率的인 運營을 爲한 視聽覺 敎具의 開發에 關한 硏究

李興浩,韓相玉 충남대학교 공업교육연구소 1980 論文集 Vol.3 No.1

The General Electric Lab. is one of the basic technologies in electricity and is a required class for all students except the students of Dept. of Electrical Eng. and Dept. of Electronic Eng. in the College of Industrial Education, Chungnam National University. This lab instructed 4 hours a week is carried out with much difficulties such as the destruction of the electrical devices, and the measuring instruments, and sometimes safety problems. To overcome the difficult problems described above, the audio-visual materials such as the visual lab aids and slide films were developed in this study and the following advantages are expected; 1) To stimulate students to practise in active attitudes in the lab. 2) To demonstrate how to use the electrical devices and the measuring instruments at the pre-practice stage. 3) To have better learning effectiveness. 4) To protect beginners from the dangerous circumstances in the lab.

RF 방식의 실시간 선량계 구현

이흥호,이승민 대한공업교육학회 2008 대한공업교육학회지 Vol.33 No.2

본 논문에서는 변위 손상 현상을 이용하는 중성자 탐지소자와 선량계 모듈에 RF 통신 기능을 추가하여 방사선 환경 내에서 내 방사선화 된 로봇에 의해 가동 중인 원자력 발전소등의 특정 부분에 대하여 실시간으로 측정된 방사선량 데이터의 취득이 가능한 모듈을 개발하였다. 기존의 운용중인 발전소에 대한 방사선량은 휴지기간에 탐지소자를 설치하여 다음 휴지기간에 그 탐지소자를 가지고 나와 누적방사선량을 측정하거나, 설치된 탐지소자로 부터 유선으로 안전한 곳까지 데이터를 취득해 와서 그 값을 분석하여 왔으나, RF 통신 기능이 추가된 모듈은 내 방사선화 된 로봇에 탑재하여 로봇이 가동 중인 발전소 곳곳을 누비며, 설치된 탐지소자로부터 그 방사선량을 취득할 수 있다. 이는 기존의 취득방식에 비해 많은 부분 효율적인 측면이 있으며, 유지보수 비용의 절감을 가져 올 수 있을 것으로 기대된다. 본 연구에서는 RF 통신을 수행하기 위한 안테나 회로의 설계 기법과 취득한 정보를 EEPROM에 저장하고, 그 저장된 데이터를 로봇에 부착된 Reader에 의해 읽을 수 있는 일련의 흐름을 구성하는데 있어 필요한 여러 가지 기술 혹은 기법에 대하여 살펴보았다. In this paper, we developed a module that can execute the data acquisition of the real-time measured radiant rays in the specific part of the nuclear power station. This module that includes the RF communication function, paces around the power station, being loaded on robot and can obtain the generated radiant rays in the various places through the detecting devices. It is considered that this new developed radiant rays acquisition method will have the higher degree of efficiency as compared with the existing method and reduce the expenses of the maintenance and repair work.

중형, UPS system에서의 순시 추종 제어에 관한 연구

李興浩 忠南大學校 産業技術硏究所 1992 산업기술연구논문집 Vol.7 No.1

This paper deals with the harmonics of the center-tap type inverter and non center-tap type inverter, which are controlled by the instantaneous hysterisis loop method in the medium-scale UPS system. The state equations of the two inverter systems were derived and the harmonic characteristics was computed by the means of the computer simulation. Through the results of the simulation, it was shown that the center-tap type inverter has the better harmonic characteristics than the non-center-tap type inverter.

마이크로프로쎄써를 이용한 분권 발전기 무부하특성 측정에 관한 연구

이흥호,노태천 대한전자공학회 1981 대한전자공학회 학술대회 Vol.1981 No.1

16비트 마이크로프로세서 설계에 관한 연구

이흥호 충남대학교 공업교육연구소 1984 論文集 Vol.7 No.2

새로운 공업용 설비들은 마이크로프로세서의 발전으로 많은 생산업체에서 생산되고 있다 마이크로프로세서의 하드웨어 시스템을 설명하기 위해 흔히 SIC를 기초로 AHPL 프로그램을 사용한다. 본 연구에서는 SIC보다 더 유용한 16비트 마이크로프로세스를 만들기 위한 제어 시퀸스 프로그램이 개발되고, 상태도로 설명된다. New industrial equipments have been. manufactured in many factories with the advent of the microprocessors. To describe the microprocessor hardware system, we usually use AHPL program which is based on the SIC. Through this study, a control sequence program to make the 16-bit microprocessor more useful than that of the SIC, is developed and is described by means of the state diagram.

마이크로프로쎄서를 利用한 直流分捲發電機의 無負荷特性 測程에 關한 硏究

李興浩,盧泰天 충남대학교 공업교육연구소 1981 論文集 Vol.4 No.2

This paper provides experimental results, obtained by using a microprocessor kit, from the no-load characteristics of the dc shunt generator. Although there are some errors in the experimental resuls because of limitations of A/D converter, it is considered that this study will be useful for the characteristic measurements of electric machines.

연소기후치 가스터빈 사이클에 관한 열역학적 연구 ( A Thermodynamic Study on Exhaust-Heated Gas Turbine Cycle )

이흥호,박종구,양옥룡 대한기계학회 1991 대한기계학회 춘추학술대회 Vol.- No.-

공과대학 교육과정의 개선 방안 연구

이흥호,노태천,한상옥 충남대학교 공업교육연구소 1997 論文集 Vol.20 No.1

This research intends to search for ways to improve engineering education. It was performed by referring to both statistical data on the supply, demand and employment of graduates from colleges of science and technology, and programs which they drew up to improve engineering education. Considering the given condition of engineering education and curriculum operation, the ways to improve engineering education are the following: 1) In order to keep the balance of supply and demand of manpower from between science and manpower from technology, the number of graduates from engineering colleges should be increased up to 4 times that from college of science. The imbalance of the number of graduates among majors or degrees should also be changed. 2) Excellent engineers who are able to adjust to practical business should be brought up from college, so that they will work in manufacturing industry. To do so, theory-oriented education should be avoided and new curriculum emphasizing practical business is needed. 3) The education ministry and related institutions must reduce the level to 20 students for a professor and increase up to $10,000 per student a year in order to improve the educational condition of engineering colleges. In order to improve the educational condition of private colleges, donation to private colleges should be widely given tax favors. 4) To improve engineering education, ⅰ) an evaluation system of professors and department is needed; ⅱ) the strengthening education with experiments and practices is needed; ⅲ) curriculum needs to be smoothly operated; ⅳ) changing majors/transferring schools should be allowed for students; ⅴ) a cooperation system among industry circles, schools and research institutes is needed. 5) A division system should not be forced, but rather we need to satisfy conditions to operate it, ⅰ) by reducing professors' teaching hours down to 6, ⅱ) by employing research professors, ⅲ) by increasing financial aid to each division. 6) There are a few points to be improved; in the case of a double major system, credits of the first major can become lower than those of the second major. In the case of division system, either students might have a lesser chance to choose minors, or cannot earn sufficient credits for a second major.

燃料電池用 直流 電力 變換機 開發

崔璋浩,成世眞,李興浩 忠南大學校 産業技術硏究所 1991 산업기술연구논문집 Vol.6 No.2

This paper deals with a Power Conversion System for Fuel Cell. The system consists of Chopper, Inverter and Control Unit. Chopper boosts the output voltage of Fuel Cell and controls reactive power. Inverter converts DC into Ac and controls active power. Controller is realized by the Software Method using a 8031AH one-chip Microprocessor. Simulated results are consistent with experimental results.

외란 옵저버를 이용한 DD 로봇의 역운동학 간략화

신정호,이흥호 忠南大學校 産業技術硏究所 1998 산업기술연구논문집 Vol.13 No.1

본 논문은 작업 좌표 공간에서 작용하는 외란 옵저버(disturbance observe)를 제안하여 로봇 제어 시스템에 적용하는 방법과 복잡한 역운동학 계산식을 간략화하는 방법에 대하여 논하였다. 여기에서 제안한 작업 좌표 공간에서의 외란 옵저버를 수직 다관절형 로봇 시스템에 적용하면 로봇 구동 시스템을 강인한 제어로 구성할 수가 있고, 외란 및 오차를 보상하여주기 때문에 성능의 저하없이 계산이 복잡한 역 운동학 계산식을 간략화 할 있다. 또한, 본 논문에서는 이 외란 옵저버 제어법에 의한 위치/힘의 하이브리드 제어계를 구성하여 직접 구동형 3자로봇에 적용하였으며, 실험을 통하여 그 유효성을 확인하였다. This paper proposes a simple and high performance control based on disturbance compensation by the disturbance observer in task space. This disturbance observer in task space performs the disturbance compensation and realizes the acceleration control in task space. The advantage of this new strategy is that the sensitivity to the disturbance in task space are determined by the disturbance observer; and the inverse kinematics routine can be simplified without reduction of performance. The disturbance observer makes robot manipulators linear in task space and realizes the acceleration control. The inverse kinematics routine can be simplified, because the disturbance observer compensates not only the disturbance but also the error due to the simplification of the inverse kinematics routine. The new strategy is applied to a three-degrees-of-freedom direct drive robot to show its effectiveness experimentally. We show the hybrid position/force controller based on the disturbance compensation in task space and its effectiveness.