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농작업 부하 데이터를 활용한 80 kW급 전기구동 AWD 트랙터의 시뮬레이션 모델 개발
백승윤(Seung Yun Baek),김완수(Wan Soo Kim),김연수(Yeon Soo Kim),김용주(Yong Joo Kim),박철규(Cheol Gyu Park),안수철(Su Cheol An),문희창(Hee Chang Moon),김봉상(Bong Sang Kim) 유공압건설기계학회 2020 드라이브·컨트롤 Vol.17 No.1
The aim of this study is to design a simulation model for an electric All-Wheel-Drive (AWD) tractor to evaluate the performance of the selected component and agricultural work ability. The electric AWD tractor consists of four motors independently for each drive wheel, and each motor is combined with an engine generator, a battery pack, and reducers. The torque data of a 78 kW-class tractor was measured during plow tillage and driving operation to develop a workload cycle. A simulation model was developed by using commercial software, Simulation X, and it used the workload as the simulation condition. As a result of simulation analysis, the drive system, including an electric motor and reducers, was able to cope with high load during plow tillage. The SOC (State of Charge) level was influenced by the output power of the motor, and it was maintained in the range of 50~80%. The fuel consumed by the engine was about 18.23 L during working on a total of 8 fields. The electric AWD tractor was able to perform agricultural work for about 7 hours. In the future study, the electric AWD tractor will be developed reflecting the simulation condition. Research on the comparison between the simulation model and the electric AWD tractor should be performed.
양승윤,김정훈,김경섭,김재산,박귀호,김기원,이상호,Yang Seung-Yun,Kim Jeong-Hoon,Kim Kyung-Sub,Kim Jae-San,Park Kwi-Ho,Kim Gee-Won,Lee Sang-Ho 한국군사과학기술학회 2005 한국군사과학기술학회지 Vol.8 No.1
In this study, Experimental analysis on submarine cable tension was performed for the safe and efficient laying and recovery of a submarine cable. The tension analysis was done through the analyzed data using the cable dynamic theory and the measured data using the experiment. The analyzed cable tension was able to decide requirements for the purpose of laying and recovery of the submarine cable. As the result of tension analysis for a Submarine cable, it was shown a proper feasibility to determine the laying and recovery conditions of the submarine cable.
소수연(Soh, Soo-Youn),김승윤(Kim, Seung-Yun),유준호(Yu, Jun-Ho),지수연(Ji, Su-Yeon) 경성대학교 사회과학연구소 2014 社會科學硏究 Vol.30 No.4
본 연구의 목적은 초기 청소년기 자녀를 둔 부모들이 자녀들의 환경적?심리적?대인관계의 변화를 이해하고 부모-자녀 관계에서의 갈등과 다양한 청소년 문제에 효과적으로 대처함으로써 청소년 문제를 예방하도록 우리나라 실정에 맞는 부모교육 프로그램을 개발하고 그 효과를 검증하는데 있다. 이를 위해 선행연구, 현장 전문가 및 청소년, 부모 대상 포커스그룹 인터뷰, 요구조사를 통해 프로그램 구성요소를 추출하여 프로그램을 구성하였다. 개발된 프로그램의 효과를 검증하기 위해, 전국 6개 지역에 거주하는 초등학교 4학년부터 중학교 2학년의 초기 청소년 자녀를 둔 부모 38명을 대상으로 총 6회기(회기 당 120분)를 실시하였다. 통제집단과 실험집단을 대상으로 양육효능감, 부모-자녀 간 의사소통, 부모 자기성장 척도로 사전-사후검사를 실시하여 프로그램의 효과를 검증하였다. 연구 결과, 양육효능감, 자기성장의 하위요인인 자기수용, 자기개방 정도가 향상되어 본 프로그램이 초기 청소년기 자녀를 둔 부모에게 유용한 것으로 나타났다. 따라서 본 연구는 현재 우리 상황을 반영한 초기 청소년기 자녀를 둔 부모 대상의 부모교육 프로그램을 개발하여 이 시기 부모들에게 필요한 양육 방법을 제시하였다는데 의의가 있다. This thesis aims to help parents understand their early adolescents" environmental, psychological, interpersonal changes and to develop the training programs for parents of early adolescents and verify its effect in order to deal with interpersonal conflict and various adolescents" problem. The process of developing program followed the program development procedure that advanced research, focus-group interview with trainers, parents, adolescents. The participants were 38 parents with adolescents from 10 to 14 years old in 6 cities. They were divided into experimental and control groups and offered 6 sessions. To verify this the program, participants took protests and followed-up tests and trainers‘ quality assessment was performed. The result of this study showed significant increase of parenting sense of competence, self-openness and acceptance compared to the control groups. These results imply this program is meaningful in that it reflect the real state of Korean. Moreover, it this program has a significance in promising program subjected to Korean parents with early adolescent.
박재영(Jae Young Park),김동훈(Dong Hoon Kim),김영봉(Young Bong Kim),윤영석(Young Seok Yun),설승윤(Seung Yun Seol) 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.10
Because of carpets size smaller, using of vacuum cleaner for large carpet is decresed and increased the using of Air Turbine for domestic vacuum cleaner for small size carpet. Also Air turbine is essential part to clean the car seat, small carpet for stairs. Besides the Air turebine, there are vacuum cleaner which using similar way to use kinetic energy for rotating the fan. Exising cleaner is blanket brush which is that have bigger agitator than Air turbine, but it use same way to rotating agitator. However, the blankets friction is lower than carpets friction, it doesnt need higher torque than Air turbine. So result of studiying the Air turbine contribute improvement of performance for other cleaner.
박재영(Jae-Young Park),김동훈(Dong-Hoon Kim),김영봉(Young-Bong Kim),윤영석(Young-Suk Yun),설승윤(Seung-Yun Seol) 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.4
Because of carpet’s size getting smaller, using of vacuum cleaner for large carpet is decreased and increased the using of Turbo brush for domestic vacuum cleaner for small size carpet. Also Turbo brush is essential part to clean the car seat, small carpet for stairs. Besides the Turbo brush, there are vacuum cleaner which using similar way to use kinetic energy for rotating the fan. Existing cleaner is blanket brush which is that have bigger agitator than Turbo brush, but it use same way to rotating agitator. However, the blanket’s friction is lower than carpet’s friction, it doesn’t need higher torque than Turbo brush. So result of studying the Turbo brush contribute improvement of performance for other cleaner.