• 제목/요약/키워드: H.332

검색결과 278건 처리시간 0.034초

자탈형 콤바인용 벼 무게 측정시스템 개발 (Development of a Rice Weighing System for Head-Feed Combine)

  • 이충근;최용;전현종;김학진;이상봉;류찬석
    • Journal of Biosystems Engineering
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    • 제32권5호
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    • pp.332-338
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    • 2007

  • Yield mapping is necessary for precision farming. An on-site rice weighing system for a head-feed combine was developed to measure the total weight of rice grain harvested while the combine was operated. A load cell system was used to monitor rice weights accumulated into the combine grain tank using a load cell. This method gave cumulative grain weight readings as a function of time. The system consisted of a load cell, two supporting brackets, and a computer-based data acquisition system. The weights measured with the system from two fields were compared with those obtained with a commercially available electronic balance. The response of the load cell to varying grain weights was linearly modeled, showing a coefficient of determination of 0.998 and a standard error of ${\pm}4.09kg$.

  • https://doi.org/10.5307/JBE.2007.32.5.332 인용 PDF KSCI

회전 스웨이징을 이용한 자동차용 카울크로스바의 일체화 제조공정 개발 (Development of One-Piece Manufacturing Process for Automotive Cowl Cross Bar Using Rotary Swaging)

  • 김홍석;윤재웅
    • 소성∙가공
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    • 제25권5호
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    • pp.332-337
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    • 2016

  • The automobile cowl cross bar which is a backbone frame part holding electrical and air conditioning components inside the cockpit module has been designed with more complex geometries recently due to demands of its enhanced functions and reduced weight of frame parts. The traditional manufacturing process using welding between tubes with different diameters shows several problems such as poor mechanical characteristics and appearance, etc. Therefore, in this study, one-piece manufacturing processes which can eliminate the welding process were developed by applying the rotary swaging process. CAE analyses were conducted to examine the feasibility of the process and prototypes were manufactured by using a rotary swaging machine with 4 split rotating dies and 12 head rollers. Bending tests of the manufactured prototypes confirmed that the rotary swaging process gives better mechanical properties comparing with the conventional processes.

  • https://doi.org/10.5228/KSTP.2016.25.5.332 인용 PDF KSCI KPUBS HTML