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엄기명(KM.EOM),송병섭(B.S.SONG),김연충(Y.C.KIM),원충연(C.Y.WON),이상석(S.S.LEE) 전력전자학회 2000 전력전자학술대회 논문집 Vol.2000 No.11
Switched Reluctance motors(SRM) attract much attention in motor because they are reliable and inexpensive. With advance in power electronics and high-speed processors, the performance of SRM has been enhanced greatly. But they require rotor position information to operate. In many systems, rotor position sensors are undesirable and have disadvantages. To overcome the disadvantages include by position sensors, a number of sensorless methods for SRM'S have been proposed by researchers This paper describes a method for indirect sensing of rotor position in SRM's pulsewidth modulation voltage control. The method required no priorl knowledge of motor parameters excepts for the numbers of stator and rotor poles. The detection method uses the change of the derivative of the phase current to detect the position.
엄기명(KM Um),이혜경(HK Lee),권장연(JY Kwon),이영진(YJ Lee),한혁동(HD Han),김대현(TH Kim) 대한산부인과학회 1992 Obstetrics & Gynecology Science Vol.35 No.12
The amniotic band syndrome is a collection of fectal malformations associated with fibrous bands that appear to entangle or entrap various fetal parts in utero, leading to deformation, malformation, or disruption. The most commonly associated anomalies include amputations, constriction bands, syndactyly, craniofacial defects, club feet, and cleft lip. We had experienced a case of amniotic band syndrome and presented with a brief review of literature.
이영인(YI Lee),엄기명(KM Um),권장연(JY Kwon),한상원(SW Han),차동수(DS Cha),김대현(TH Kim),조미연(MY Cho) 대한산부인과학회 1992 Obstetrics & Gynecology Science Vol.35 No.10
Papillary serous carcinoma of the peritoneum, though biologically and histologically similar to papillary serous carcinoma of the ovary and malignant mesothelioma, is a distinct clinicopathologic entity and should be classificed as a distinct carcinoma separate from the other two for the differences in the response to therapentic intravention and prognosis. We have experienced a case of papillary serous carcinoma of the peritoneum and it is presented with brief review.
송병섭(Byeang-Seab Song),엄기명(Ki-Myeong Eom),윤용호(Yong-Ho Yoon),원충연(Chung-Yuen Won),김덕근(Duk-Gun Kim) 한국조명·전기설비학회 2000 한국조명·전기설비학회 학술대회논문집 Vol.2000 No.-
Switched reluctance motor drives have been finding their applications in the variable speed drives due to their relatively low cost, simple and robust structure, controllability and high efficiency. Fuzzy control does not need any model of plant. It is based on plant operator experience and heuristics. Fuzzy control is basically adaptive and gives robust performance for plant parameter variation. This paper deals with the speed control of switched reluctance motor using fuzzy controller with 7-rule based fuzzy logic. The proposed fuzzy controller is superior to the control performance of the conventional PI controller. The fuzzy controller is implemented by 80C196KC, 16 bit one-chip microcontroller.
김동빈(DB Kim),권장연(JY Kwon),이혜경(HK Lee),엄기명(KM Um),정인배(IB Chung),김대현(TH Kim),송재만(JM Song) 대한산부인과학회 1993 Obstetrics & Gynecology Science Vol.36 No.1
Leiomyomas of the vagina are extremely uncommon tumors. Because majority of these tumors occur in midline of anterior vaginal wall, urinary tract origin is commonly suspected. Recently we experienced a case of vaginal leiomyoma arising in anterior vaginal wall, thus it is presented with a brief review of the case and its literatures.