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논문 기본 정보

자료유형
학술대회자료
저자정보
Mikio, Umeda (Department of Agricultural Engineering Faculty of Agriculture, Kyoto University) Michihisa, Lida (Department of Agricultural Engineering Faculty of Agriculture, Kyoto University) Kiyoshi, Namikawa (Department of Agricultural Engineering Faculty of Agriculture, Kyoto University)
저널정보
한국농업기계학회 한국농업기계학회 International Conference 한국농업기계학회 1993년도 Proceedings of International Conference for Agricultural Machinery and Process Engineering
발행연도
1993.1
수록면
830 - 839 (10page)

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Agricultural hydraulic robot which was reported in Part Ⅰ had been developed . The robot satisfied performance to intend before development. For actual use, however, it have been necessary to reduce manipulator weigh and to simplify construction of hydraulic control valve. Then, working stress of manipulator link and pressure fluctuation of hydraulic circuit were measured. Step and frequency response tests were done subject to amplitude of reference voltage of 0.1 , 0.3 , 0.5 and 1.0v. and delivery pressure of 3.5 and 5.0MPa. Working stress were about 25% comparing with fatigue strength, Thus, mass of manipulator might be reduce to 30 %. In hydraulic control system, virtual natural frequency of 6.5Hz is produced from the combination of drain passage area shortage of servovalve. Further , because of passage area shortage , working pressure at both side of cylinder was acted on. This phenomenon prevent utilize effectively engine power. Then, control valve for new model was p oposed.

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