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임영철,박종건,류영재,이홍수,변성천,김의선 ( Y . C . Lim,J . G . Park,Y . J . Ryoo,H . S . Lee,S . C . Byun,E . S . Kim ) 한국센서학회 1996 센서학회지 Vol.5 No.6
In this paper, a development of model based battery SOC indicator is described. The proposed method is independent upon initial SOC, is reliable on the sudden change of load, and could estimate the available driving distance. The mathematical model of battery which has relation of the current, voltage and SOC estimates the SOC by least square estimation to minimize the error between measured voltage and estimated voltage. For experiment, the charging and discharging system using computer was designed to acquire the current and voltage data for model. The feasibility in electric vehicle was confirmed by variable load testing using the developed SOC indicator by stand-alone type microcontroller.
파종시기 및 파종량이 총체보리의 생육특성 및 수량에 미치는 영향
김원호(Kim. W. H),서성(S. Seo),신재순(J. S. Shin),임영철(Y. C. Lim),김기용(K. Y. Kim),김찬호(C. H. Kim) 한국초지조사료학회 2006 한국초지조사료학회지 Vol.26 No.3
This study was carried out to find out the effect of seed date and rate on the agronomic c㏊racteristics and yield of forage barley in paddy field of Suwon, from 2001 to 2003. The main plots were consisted of different seeding dates such as 5th and 20th October and 5th November. The subplots were consisted of different seeding rates of barley such as 160, 190 and 220 ㎏/㏊. Plant height was increased at the early seeding. Dry matter(DM) percentage of barley was decreased as the seeding date was delayed. Dry matter percentages of 5th and 20th October and 5th November were 47.4, 41.5 and 34.5%, respectively. Fresh matter yield of barley decreased from 30,092 to 16,018 ㎏/㏊ as the seeding date was delayed. And fresh matter yield of barley was significantly increased with the increase in the seeding rate. Dry matter yield of barley decreased from 14,230 to 5,521 ㎏/㏊ as the seeding date was delayed. And dry matter yield of barley was significantly increased with increase in the seeding rate(p〈0.05). The results obtained from this study indicate t㏊t both the seeding date of 20th October and seeding rate of 220 ㎏/㏊ would be recommendable for forage yield of barley in paddy field.
임용우(Y. W. Rim),김기용(K. Y. Kim),김맹중(M. J. Kim),성병렬(B. R. Sung),임영철(Y. C. Lim),정의수(E. S. Chung),신홍균(H. K. Shin),김용선(Y. S. Kim) 한국잡초학회·한국잔디학회 2003 Weed & Turfgrass Science Vol.17 No.2,3
2001년 수집된 한국잔디 133계통들 중에서 우수한 계통들을 선발하기위하여 밀도(품질),<br/> 피복성, 녹색기간, 내병성, 출수유무(종자수) 등의 주요특성과 그 외 생육특성들이 조사되었다. 생육특성이 우수한 6계통이 선발되었으며 그 결과를 요약하면 다음과 같다.<br/> 수집된 133계통들 중에서 가장 녹색기간이긴 계통은 J01067으로 11월초까지 녹색도를 유지하였다. J01106 및 J01129 계통들은 엽폭이 각각 1.5mm 및 2mm 정도로 매우 좁으며, 밀도가 높고, 피복성도 좋은 것으로 나타났으며, 내병성도 강하였다. J01122 계통은 들잔디 계통들 중에서 유일하게 내병성이 강한 계통으로 선발되었다. J01128 계통은 엽폭이 3.2mm로 중엽에 속하였으며, 대비품종인 Sunburst 와 비슷하였다. 이 계통의 경우도J01106, J01129 계통들과 마찬가지로 밀도가 높고 내병성이 강한 것으로 나타났다.<br/> 수집된 133계통들의 형태적 분류를 위하여 5가지의 생육특성을 사용하여 크게 세가지 군집<br/> 으로 분류하였으며, 그 중에서 대비품종으로 사용된 6품종들과 선발된 우수 6계통의 분류는<br/> 다음과 같다. 제 1군집에 속하는 품종 및 계통은 Belare, Meyer, 안양중지(Anyang-jungji), J01067, J01112 등이 포함되었으며, 제 2군집으로는 S-94, J01105가 포함되었고, 제 3군집에는 Sunburst, 건희(Konhee), J01106, J01128, J01129 등이 포함되었다. Growth characteristics such as density(quality), covering speed, green period, disease resistance, heading existence(number of seeds) and other characteristics were examined for selection of superior lines among the 133 zoysiagrass lines collected in 2001. Six superior lines were selected and the results were summarized as follows.<br/> Superior line, J01067 was longest for green period among the 133 zoysiagrasses and stayed green until the beginning of November. Leaf width of J01106 and J01129 lines was very narrow as 1.5㎜ and 2㎜, respectively and superior for density(quality), covering speed and disease resistance. J01122 line was selected for strongest disease resistance among the lines of Zoysia japonica. Leaf width of J01128 was 3.2㎜ showing midium type and similar to standard cultivar, Sunburst. This line also showed higher density and strong disease resistance like J01106 and J01129.<br/> Five growth characteristics for morphological classification of 133 zoysiagrass lines<br/> was used and divided into 3 cluster groups. Of 133 lines, 6 standard cultivars and 6 superior lines were classified as follows. First cluster group contained Belare, Meyer, Anyang-jungji, J01067, J01122, and second group contained S-94 and J01105, and third group contained Sunburst, Konhee, J01106, J01128 and J01129.<br/> <br/>
디지털 타이머를 이용한 인터넷 기반의 원격제어 및 모니터링
이양규(Y.G. Lee),강신영(S.Y. Kang),김은주(E.J. Kim),박철수(C.S. Bark),임영철(Y.C. Lim),김광헌(G.H. Kim) 전력전자학회 2001 전력전자학술대회 논문집 Vol.2001 No.-
This paper deals with the economical equipment control which is used by internet network system at the industrial workplace If the control devices can be accessed by internet, we can have the developed possibility of work conditions In this paper, we presented the advanced digital timer which has a communication function to control and observe panel to realize control solution based on internet to be easily applicable at workplace with low cost. and we used 485 serial communication module to have parallel expansibility and safety, And, this system was experimented and designed for easy system management and status check from remote station through internet As the result of experiment, the circuit configuration would be more simplified than the existing, and it is expected that multi connection control and monitoring can be simply implemented with low cost equipment at industrial workplace.<br/> <br/>
Spline 보간식을 이용한 물체재질인식센서의 성능개선
박종건,임영철,조경영,김이곤,장영학 ( J . G . Park,Y . C. Lim,K . Y . Cho,Y . G . Kim,Y . H . Chang ) 한국센서학회 1992 센서학회지 Vol.1 No.1
This paper describes a noble robot sensor designed to recognize an unknown material by measuring its thermal conductivity on various ambient temperature. The excellent agreement has been obtained between the measured sensor temperature and the calculated sensor temperature by cubic spline interpolation. The active sensor to measure the thermal conductivity of a gripped object was designed and the software program using C language to discriminate objects made of different materials was developed. The temperature response characteristics of different materials on the same ambient temperature was investigated. The temperatures on three comparing points varied linearly and had parallel relation with one another in accordance with various ambient temperature.
박종건,임영철,조경영,김이곤,장영학,Park, J.G.,Lim, Y.C.,Cho, K.Y.,Kim, Y.G,,Chang, Y.H. 한국센서학회 1992 센서학회지 Vol.29 No.3
본 연구에서는 물체의 열전도 특성을 감지하여 임의의 대기온도에서도 열전도가 다른 몇가지 물체의 재질을 식별할 수 있는 센서에 대해 연구하였다. 임의의 대기온도에서 센서의 온도 값을 계산하기 위해 3차 Spline 보간식을 적용하여 계산된 센서의 온도에 따라 재질을 식별하는데, 실측된 온도와 비교하였을 경우 매우 잘 일치하였다. 열전도 특성을 이용한 물체의 재질인식용 능동센서를 설계하였으며 C 언어를 이용한 물체의 재질 식별 프로그램을 개발하였다. 동일한 대기 온도상에서의 재질별 온도응답특성을 조사하였으며 대기온도변화에 따른 재질별 온도응답특성을 조사하였으며, 대기온도 변화에 따라 3 비교점의 온도는 거의 직선적으로 변화하고 평행상태를 유지함을 알 수 있었다. This paper describes a noble robot sensor designed to recognize an unknown material by measuring its thermal conductivity on various ambient temperature. The excellent agreement has been obtained between the measured sensor temperature and the calculated sensor temperature by cubic spline interpolation. The active sensor to measure the thermal conductivity of a gripped object was designed and the software program using C language to discriminate objects made of different materials was developed. The temperature response characteristics of different materials on the same ambient temperature was investigated. The temperatures on three comparing points varied linearly and had parallel relation with one another in accordance with various ambient temperature.
멀티 영벡터를 갖는 2상 랜덤 중앙 분포 변조기법의 파워 스펙트럼
오승열(S.Y.Oh),김정근(J.G.Kim),임영철(Y.C.Lim),양형렬(H.Y.Yang),정영국(Y.G.Jung) 전력전자학회 2003 전력전자학술대회 논문집 Vol.2003 No.11
본 연구에서는 변조지수 M이 큰 영역에서는 고조파 스펙트럼의 광대역화 효과가 저하되는 2상 랜덤 중앙 정렬 변조기법(Random Centered Distribution PWM.RCD)기법의 문제점을 해결하고자 멀티 영벡터 2상 RCD(Multi Zero Vector RCD.MZRCD)변조기법을 제안하였다. 제안된 2상 MZRCD기법은 변조지수 M=07을 기준으로 하여 M이 07다 큰 영역에서는 영벡터를 V(111)로 선택하고, 07보다 작은 영역에서는 V(000)을 선택한다. 제안된 방법을 유도모터 구동시스템에 적용해 본 결과, M이 07이상인 영역에서도 모터의 전압/전류 및 소음 스펙트럼의 광대역화 특성이 종전의 방법에 비하여 우수함을 확인할 수 있었다.