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안경관(Kyoung Kwan AHN),윤주현(Joo Hyeon YOON),조용래(Yong Rae CHO),김정수(Jung Soo KIM) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.11
The use of hydraulic systems in industrial applications has become widespread due to their efficiency advantages. In recent years, hybrid actuation system, which combines electric and hydraulic technology in a compact unit, can be adapted to a wide variety of force, speed and torque requirements. Moreover, the hybrid actuation system has dealt with the energy consumption and noise problem existed in the conventional hydraulic system. The new low cost hybrid actuator using DC motor as a power supply unit is considered as a novel linear actuator with various applications. However, this efficiency gain is often accompanied by a degradation of system stability and control problems. In this paper, to realize energy saving hybrid excavator system using hybrid actuator, the design of a robust controller for the new hybrid actuator using quantitative feedback theory (QFT) is presented.