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논문 : 노외기계시스템공학 ; 타이어 시뮬레이터를 이용한 능동형 타이어 공기압 제어 시스템 개발
이규철 ( K. C. Lee ),류관희 ( K. H. Ryu ),이중용 ( J. Y. Rhee ),홍지향 ( J. H. Hong ),김혁주 ( H. J. Kim ),유지훈 ( J. H. Yu ) 한국농업기계학회 2010 바이오시스템공학 Vol.35 No.1
This study was performed to develop an active tire pressure control system that can adjust tire pressure to the optimum level according to traveling and working condition of agricultural tractor. For the development of active tire pressure control system, pneumatic supplier, solenoid valve block including pneumatic supply line, infinite rotation type pneumatic supplier with rotary joint unit, tire pressure transceiver module and control algorithm were developed. Also, tire simulator was developed. Using this tire simulator, the feasibility of each part constructing actual system was tested by checking the performance. The average communication success ratio was 98.3% between tire pressure transmitter and receiver module according to the various tire rotational speed and data receipt position of receiver module. The communication performance of the developed transmitter and receiver module was very stable in any condition. The tire pressure control system was accomplished by using the proportional control algorithm in this study. Also tire pressure control performance of developed control system was analyzed by using the tire simulator. As a result of control performance analysis to the developed system, the developed control system took 307 seconds to inflate agricultural tractor`s tire from 50 kPa to 180 kPa. In opposite case, it took 210 seconds. Also it was able to control the tire pressure accurately under ±0.9% (FS) in any condition.
강성규(S.K. Kang),이승재(S.J. Lee),유인수(I.S. Ryu),이규철(K. C. Lee) 한국연소학회 2007 한국연소학회지 Vol.12 No.4
Utilization of sewage sludge for industrial fuel should be considered in appropriate calory with low emission of environmental pollutants and the amount of sewage sludge for continuously long-time operation. For the low grade fuel(<4,000kcal/㎏), one of proper processes is that coal and oil are added into sewage sludge to remove impurities and increase calory(>7,000kcal/㎏) and the amount of fuel having sewage sludge. Recently, 2-step agglomeration has been attempted by secondarily agglomerate sewage sludge onto the primary nuclei formed by agglomeration of coal and oil. Furthermore, sawdust and waste oil can substitute about 1/3 each for coal and mineral oil consumed in this process, which will lead to securing alternative energy resources from environmental pollutants as well as cost reduction.
Pt, Pd와 Ph가 담지된 촉매상에서 암모니아와 수소/일산화탄소의 단계별 촉매연소에 관한 연구
황주연(J. Y. Hwang),유인수(I.S. Ryu),이규철(K. C. Lee),이승재(S.J. Lee),노동순(D. S. Noh),이관석(K. S. Rhee),강성규(S.K. Kang) 한국연소학회 2006 KOSCOSYMPOSIUM논문집 Vol.- No.-
본 연구는 Fuel-Nox 제어를 위한 암모니아 중 질소성분의 전환반응에 대한 실험 결과이다. 특히 열분해가스 촉매연소에서 NOx 생성을 줄이기 위한 제어 조건을 제시하였으며, Fuel-NOx 반응 메카니즘 연구의 기초자료를 제시하였다. This study investigated on the conversion of nitrogen component in ammonia gas to control fuel-NOx. Control conditions were found to suppress the production of NOx in the catalytic combustion of the gasified fuels. Also, the results would provide the basis of the theoretical study on fuel-NOx generation mechanism.