敎養體育 運營의 效果的인 方案에 관한 調査硏究 : 關東大學 女學生을 中心으로

鄭泰相 관동대학교 1981 關大論文集 Vol.9 No.1

PID제어를 이용한 Chamber의 냉방제어 시뮬레이션

정태상,황광성,김태규,김유영,정기환 진주산업대학교 산업과학기술연구소 2003 산업과학기술연구소보 Vol.- No.10

A cooling system of chamber is universally appliable with simple ON-OFF control algorithm. It has such disadvantages as having a delay for response time. To solve the above problem, we propose establishing the mathematical model of cooling system for chamber, simulating it with PID control algorithm and evaluating performance tests for control algorithm respectively.

직장인들의 레져활동 유형과 참여도에 관한 조사연구

정태상 관동대학교 1999 예술디자인연구논문집 Vol.2 No.-

마이크로 컴퓨터를 이용한 가속도 측정회로 개발

정태상,황광성 진주산업대학교 1992 論文集 Vol.31 No.-

가속도의 측정은 물체나 기계의 운동하는 부위의 힘, 진동 등을 분석하는데 매우 중요하다. 그러나 가속도는 무게와 같은 형태의 일정한 정적 물리량이 아니어서 측도설정이 어려우므로 동적 물리량의 발생기구가 필요하게 된다. 이러한 가속도 측정 문제들을 해결하기 위하여 가속도 계측 및 측도설정을 위한 가속도 측정회로를 개발하고 가속도 발생기구를 제작하여 실험을 통해 측도설정한 결과 다음과 같은 결론을 얻었다. l. 가속도 전압 변화 회로를 개발하여 실험한 결과 양호한 작동이 이루어 졌다. 2. 가속도 발생기구를 제작하고, 실제접선가속도 측정 및 가속도 전압변화 회로 출력 디지탈값과의 측도설정 시스템을 구성하였으며, 보정프로그램을 개발하였다. 3. 실제접선 가속도 측정을 위해 사용한 전위차계의 각도와 가속도 전압 변환 회로의 A/D변환을 위해 5V의 전압을 걸었을 때 관계 수식은 다음과 같이 나타났고 θ = 0.330483157 × Dig + 0.741133731 상관계수 r=0.99999^**로 나타났으므로 고도의 상관관계가 있음을 알수 있었다. The measurement of acceleration is very important to analyzing the dynamic motion of the moving parts or a machine. a device made of strain gage sensor was developed for acceleration measurement and calibratiom using a personal computer. the normal and tangential reference acceleration was generated from the circular motion of the rotating-lever-type calibrator. An accelerometer was attached to the end of the rotating level so that it undergoes the circular motion with the radius of 1.013 meter. The lever was rotated manually on the horizontal plane to generate the acceleration, so that angular velocity can be varied. The tangential acceleration was used to calibrate and the calibration equation was derived from regression analysis of digital data obtained by a computer. To measure angular acceleration, real time and rotating angle were measured by using an on-board computer clock and a potentiometer attached to the rotation center of the circular motion made by the rotating lever, respectively. The acquired data were treated by non-filtering and digital-filtering method. The correlation filtered were more useful than those from non-filtered data. From the results of the experiment, it was clearly concluded that the developed measuring system could be used to measure acceleration accurately and rapidly, and that the tested calibrator could be used to calibrate any type of accelerometer.

온실의 환기제어를 위한 PID제어 시뮬레이션

정태상,김태규,김명규,문성동 진주산업대학교 1998 산업과학기술연구소보 Vol.- No.5

본 연구는 소형 모형 온실에 환경계측제어 장치를 설치하여 환기 냉방제어계의 온도 예측 수식모형 동정에 필요한 파라미터 식별을 실행하였고, 그 결과를 기초로 하여 비례적분미분제어법을 이용한 환기 냉방제어 시뮬레이션을 실시하였다. 그 결과 가장 우수한 제어성능을 나타내는 PID게인은 kp=1, ki=5, kd=1로 나타났다. 또한 PID제어법은 작은 환경의 변화, 제어방법, 계절변화 등에 적응하기 위해서는 게인의 변동은 필수적이라 생각된다. In this paper, parameters of mathematical model of temperature prediction for the ventilating cooling system were identified in a model greenhouse built for this study. With results from the parameter identification, operation simulations on ventilating cooling systems were carried out by proportional integrated derivative(PID) control. And them most efficient PID gains were verified, that is kp=1, ki=5, kd=1. The PID control was superior in temperature control, altough it needed to adjust gains according to daily variation, vent control methods, seasonal variations, and etc.

주부들의 클럽활동에 관한 조사 연구

정태상 관동대학교 1999 교육과학 논문집 Vol.3 No.-

스포츠 학습 경험이 스포츠 센터 가입의사에 미치는 영향

鄭泰相 관동대학교 1999 關大論文集 Vol.27 No.2

The purpose of this study was to examine effects of learning experience of sport on intention to membership of sport center among collegiate students. Data collected from seven hundred and one male and female collegiate students in Seoul. Statistics employed for data analysis t-test. Conclusions obtained from data analysis were as follow: 1) Male and female participants in sport activities shows higher intention to membership of sport center than that of non-participants. 2) Male and female users of sport center shows higher intention to membership of sport center than that of non-users.

논문 : 1997학년도 신입생 실태조사

정태상 관동대학교 1997 학생생활연구 Vol.12 No.-

퍼지제어에 의한 자연 환기 온실의 온도제어

정태상,민영봉,문경규 (사) 한국생물환경조절학회 2001 시설원예‧식물공장 Vol.10 No.1

This study was carried out to develop a fuzzy control technique of ventilation window for control-ling a temperature in a greenhouse. To reduce the fuzzy variables, the inside air temperature slop wastaken as one of fuzzy variables, because the inside air temperature variation of a greenhouse by ven-tilation at the same window aperture is affected by the difference between inside and outside air tem-perature, outside wind speed and the wind direction. Therefore, the antecedent variables for fuzzyalgorithm were used the control error and its slop, which was same value as the inside air tempera-ture slop during the control period, and the conclusion variable was used the window aperture open-ing rate. Through the basic and applicative control experiment with the control period of 3 minutes,the optimum ranges of fuzzy variables were decided. The control error and its slop were taken as 3and 1.5 times compared with target error in steady state, and the window opening rate were taken as30% of full size of the window aperture. To evaluate the developed fuzzy algorithm in which the opti-mized 19 rules of fuzzy production were used, the performances of fuzzy control and PID control werecompared. The temperature control errors by the fuzzy control and PID control were lower than1.3oC and 2.2oC respectively. The accumulated operating size of the window, the number of operatingand the number of inverse operating for the fuzzy control were 0.4 times, 0.5 times and 0.3 times ofthose compared with the PID control. Therefore, the fuzzy control can operate the window moresmooth and reduce the operating energy by 1/2 times of PID control.

SM20C 旋削時 加工條件 變化에 따른 칩 形狀에 관한 硏究

정태상,황광성,김명규,김길진,박영태 진주산업대학교 산업과학기술연구소 2007 산업과학기술연구소보 Vol.- No.14

This study was to look for cutting conditions which are safe, comfortable and contributable to the increase in productivity at the time in turning. The shape of chips while turning have a strong effect on cutting processing. If chips fail to be well controlled, systematic cutting is not possible by revolution of chips entangled with workpiece or damage of tool edges, and this causes problems threatening the safety of the operator. This study is designed to identify conditions which chips effectively controlled and able to treat properly, and the results are as follows: 1. Feed rate, which determined the shape of chips, was found to have a stronger impact on the shape of resulting chips than any other cutting condition. 2. When feed rate was 0.25mm or over, controlled chips(coil spring type) were produced under whatever cutting conditions. 3. When feed rate was 0.25mm or over and depth of cut was 1.0mm, well-controlled shorter coil type chips were produced at every spindle speed, which implied they were the most suitable cutting conditions. 4. Feed rate 0.2mm was found to be an unstable section where coil spring and linear mixed type chips were produced together, and as feed rate decreased, more linear chips beyond control were produced. 5. At the same spindle speed, as the diameter of the material became bigger, controlled chips were produced only when the depth of cut was reduced, and vice versa under feed rate 0.2mm. 6. At the same feed rate, the lower spindle speed was, the more stable chips were produced.