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전기-유압 액추에이터를 이용한 굴삭기 에너지 절감에 관한 기초 연구
윤홍수(Hong Soo Yoon),안경관(Kyung Kwan Ahan),이병룡(Byung Lyong Lee),강종민(Jong Min Kang),김재홍(Jae Hong Kim) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.11
Today, hydraulic systems play an important role in modern industry for the reasons that hydraulic actuator systems take many advantages over other technologies with high durability and the ability to produce large forces at high speeds. In recent years, electro-hydraulic actuator systems, which combine electric and hydraulic technology into a compact unit, have been adapted to a wide variety of force, speed and torque requirements. Moreover these systems resolve energy consumption and noise problems characteristic existed in the conventional hydraulic systems. Therefore, these systems have a wide range application fields especially in an excavator. So the purpose of this paper is to demonstrate efficiency of the energy saving and present some control algorithms which apply to electro-hydraulic actuator system in the bucket of the excavator. Experiments are carried out to verify the effectiveness of the proposed system with various external loads as in real working conditions.