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편로드 실린더 구동 EHA의 유압 회로 개선

Improvement of a Hydraulic Circuit for an Electro-Hydrostatic Actuator Equipped with a Single Rod Cylinder

  • 홍예선 (한국항공대학교 항공우주 및 기계공학부) ;
  • 김상석 (한화테크엠(주) 항공우주연구소) ;
  • 김대현 (한화테크엠(주) 항공우주연구소) ;
  • 김상범 (한화테크엠(주) 항공우주연구소) ;
  • 박상준 (한화테크엠(주) 항공우주연구소) ;
  • 최관호 (국방과학연구소)
  • 투고 : 2014.02.12
  • 심사 : 2014.03.14
  • 발행 : 2014.03.31

초록

The conventional hydraulic circuits for electro-hydrostatic actuators equipped with a single-rod cylinder can oscillate under overrunning load conditions. In this paper the oscillation problem encountered in the conventional hydraulic circuits for EHAs is analyzed and it is shown by simulation results that this problem can be solved by employing a counter balance valve instead of a pilot-operated check valve generally used in the conventional hydraulic circuits.

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