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PI 및 PD Type Fuzzy Controller의 자기동조에 관한 연구
이상석(Sang-Seock Lee) 한국산업융합학회 2000 한국산업융합학회 논문집 Vol.3 No.1
This paper describes a development of self tuning scheme for PI and PO type fuzzy controllers. The output scaling factor(SF) is adjusted on-line by fuzzy rules according to the current trend of the controlled process. The rule-base for tuning the output SF is defined on error and change of error for the controlled variable using the most natural and unbiased membership functions. Simulation results demonstrate the better control performance can be achieved in comparison with Ziegler-Nichols(Z-N) PID controllers.<br/>
복합방전형 오존발생기의 오존생성 및 NO 가스 제거특성
송현직(Hyun-Jig Song),이상석(Sang-Seock Lee),신용철(Yong-Chul Shin),김민회(Min-Huei Kim),박찬규(Chan-Gyu Park),이광식(Kwang-Sik Lee),임창호(Chang-Ho Im) 한국조명·전기설비학회 2006 한국조명·전기설비학회 학술대회논문집 Vol.2006 No.5월
A hybrid discharge type ozonizer, which is superposed silent and surface discharges, has been designed and manufactured to apply for Nitrogen Oxides(NO) gas removal. The ozonizer consists of three electrodes, and is classified three types of ozonizer by changing applied voltage. Investigation was carried out variance with the flow rate of supplied oxygen gas, discharge power and the sorts of superposed discharge type ozonizer. Moreover, NO(1200[ppm])/N₂ gas removal investigation was also conducted to apply for environment improvement field. Two kinds of NO gas removal investigations were conducted. It distinguishes the investigations into NO gas reaction method. According to these studies, maximum removal rate of 100[%] in NO gas was obtained, and 8334[ppm] and 3249[㎎/h] of maximum ozone concentration and generation were also obtained respectively.
김남훈(Nam-Hun KIm),김동희(Dong-Hee Kim),이상호(Sang-Ho Lee),이상석(Sang-Seock Lee),김민희(Min-Huei Kim) 전력전자학회 1999 전력전자학술대회 논문집 Vol.1999 No.7
This paper presents a implementation of digital motion control system for mduction motor vector drives using the 16M DSP TMS320F240. The DSP controller enable enhanced real time algorithm and cost-effective design of intelligent controllers for induction motors which can be Yield enhanced operation, fewer system components, lower system cost, Increased efficiency and high performance. The system presented are speed and current sensing, sine look-up table and generated SVPWM by fully integrated control software. The developed system in a Implementation are shown a good speed response characteristics results and high performance features The system can be adapted variform motor drive system.