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직류 서보 전동기의 위치 제어를 위한 오차 적응 퍼지 PI 제어에 관한 연구
최우진,임영도,이준탁 東亞大學校 1994 東亞論叢 Vol.31 No.1
In this paper, the design technique of Error Adaptive Fuzzy PI controller with the aim to achieve the accuracy and the better robustness than the conventional PI controller and the Fuzzy controller presented. In the proposed Error Adaptive Fuzzy PI controller with fuzzy reasonings; a P controller mainly used to improve the transient response, and an I controller is mainly used to excute an acrate regulation action in steady state. Using this proposed alogorithm, the position controller of the DC servo system is implemented on 80486 micro processor with DT-2801 data acqusition board. Comparing to the conventional Fuzzy controller which is based on human being's inspection and intelligence or comparing to the convetional PI controller, the proposed Error Adaptive Fuzzy PI controller has the better robust dynamics against load disturbances.
亞麻立枯病菌(Fusarium oxysporum f. lini)의 發育에 미치는 炭素源과 窒素源의 影響
李準琸 慶北大學校 1978 論文集 Vol.25-26 No.-
In this study, the effect of carbon and nitrogen sources utilized in culture medium on the growth of Fusarium oxysporum f. lini was investigated. This fungus grew well in the range from 15 to 30℃, and the optimum temperature of the fungus growing was 28℃. Fructose, maltose, mannose, and glucose were the best carbon source, and the optimum concentration of carbon source was 5 percentage of fructose, sucrose and glucose for growth of the fungus. This fungus utilized nitrate nitrogen better than ammonium nitrogen.
신경회로망을 이용한 직류 서보 전동기의 위치제어용 적응형 자기동조 PID 제어기의 실현
이준탁,이민호,최우진,이상석 동아대학교 공과대학 부설 한국자원개발연구소 1994 硏究報告 Vol.18 No.2
In this paper, the design technique of AST NN PID controller with the newly proposed learning algorithm is presented. The proposed controller is implemented using a 80486 microprocessor and a DT-2801 data acquisition board and is applied to the accurate position control of unmodelled DC servo system with uncertainty. The computer simulation results and the related experimental ones at no-load and at full-load, shows that the implemented AST NN PID controller has the excellent dynamic responses against load disturbances.
Fuzzy Controller를 이용한 Servo System의 제어
이준탁,이승환 동아대학교 공과대학 부설 한국자원개발연구소 1991 硏究報告 Vol.15 No.1
A new control technique of designing a Fuzzy Controller, based on the vague informations and the Fuzzy Set theory, is introduced and is applied to the control of a Servo System which requires faster and more accurate dynamic responses compared with other complex industrial processes. A Fuzzy Controller designed by this algorithm is consisted of a set of linguistic rules which represented the control strategies of an experienced human expert. We prove also the adaptive performances against internal-external disturbances and the usefulness of this controller from the results of simulations.
NETLA Based optimal synthesis method of binary neural network for pattern recognition
이준탁 한국지능시스템학회 2004 한국지능시스템학회논문지 Vol.14 No.2
This paper describes an optimal synthesis method of binary neural network for pattern recognition. Our objective is to minimize the number of connections and the number of neurons in hidden layer by using a Newly Expanded and Truncated Learning Algorithm (NETLA) for the multilayered neural networks. The synthesis method in NETLA uses the Expanded Sum of Product (ESP) of the boolean expressions and is based on the multilayer perceptron. It has an ability to optimize a given binary neural network in the binary space without any iterative learning as the conventional Error Back Propagation (EBP) algorithm. Furthermore, NETLA can reduce the number of the required neurons in hidden layer and the number of connections. Therefore, this learning algorithm can speed up training for the pattern recognition problems. The superiority of NETLA to other learning algorithms is demonstrated by an practical application to the approximation problem of a circular region.
Cucumovirus에 의한 약용식물(藥用植物) 바이러스병(病)의 발생(發生)에 대하여 1
이준탁,박인철 경북대학교 농업과학기술연구소 1991 慶北大農學誌 Vol.9 No.-
우리나라와 일본(日本)에서 야생 또는 재배되고 있는 약용식물(藥用植物)의 바이러스병을 조사한 결과 33종의 식물이 자연상태에서 오이 모자이크 바이러스(CMV)에 감염되어 있음을 알았다. 이들 중에서 개맨드라미(Celosia argenteia)와 쇠비름(Portulaca oleracea)의 모자이크병(가칭(假稱)), 쥐방울덩굴(Aristolochia debilis)과 번행초(Tetragonia expansa)의 괴저(壞疽)모자이크병(가칭(假稱)), basella(Basella rubra)윤문병(輪紋病)(가칭(假稱)), 석결명(Cassia torosa)과 시호(Bupleurum falcatum), 당귀(Angelica acutiloba), 구릿대(A. keiskei), 회향(Foeniculum vulgare), peucedanum(Peucedanum japanicum)의 반문병(斑紋病)(가칭(假稱))등 11종의 바이러스병명(病名)을 새로히 명명(命名)하였다. The medicinal plants of 33 species with symptoms of mosaic, necrosis, line pattern, malformation (fine leaf), stripe, and ring spot infected by cucumber mosaic virus spontaneously, were collected in Korea and Japan. Among them, 2 mosaic diseases of portulaca oleracea L. and Celocia argentea L., 2 necrotic mosaic diseases of Aristolochia debilis Sieb. and Tetragonia exponsa Murr., 6 mottle diseases of Cassia torosa Cav., Bupleurum falcantum L., Angelica acutioloba Kitagawa, A. keiskei Koidz., Peucedanum japonicum Thunb., and Foeniculum vulgare Mill., and ringspot disease of Basella rubra L., were named newly in these studies.