Journal of the Korea Institute of Military Science and Technology (한국군사과학기술학회지)

The Korea Institute of Military Science and Technology (한국군사과학기술학회)
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Performance Evaluation of a Bidirectional Piezoelectric Hybrid Actuator

양방향 압전-유압 하이브리드 구동장치의 성능 시험

  • Jin, Xiaolong (Department of Advanced Technology Fusion, Division of Interdisciplinary Studies, Konkuk University) ;
  • Ha, Ngocsan (Department of Advanced Technology Fusion, Division of Interdisciplinary Studies, Konkuk University) ;
  • Goo, Namseo (Department of Advanced Technology Fusion, Division of Interdisciplinary Studies, Konkuk University) ;
  • Bae, Byungwoon (The 1st Research R&D Center, FIRSTEC CO.) ;
  • Kim, Taeheun (The 1st Research R&D Center, FIRSTEC CO.) ;
  • Ko, Hanseo (Department of Mechanical Engineering, Sungkyunkwan University) ;
  • Lee, Changseop (The 1st Research and Development Institute, Agency for Defense Development)
  • 김소룡 (건국대학교 융합인재학부/신기술융합학과) ;
  • 하넉산 (건국대학교 융합인재학부/신기술융합학과) ;
  • 구남서 (건국대학교 융합인재학부/신기술융합학과) ;
  • 배병운 ((주)퍼스텍 기술센터) ;
  • 김태흔 ((주)퍼스텍 기술센터) ;
  • 고한서 (성균관대학교 기계공학부) ;
  • 이창섭 (국방과학연구소 제1기술연구본부)
  • Received : 2014.11.24
  • Accepted : 2015.05.22
  • Published : 2015.06.05
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Abstract

Piezoelectric-based hydraulic actuator is a hybrid device consisting of a hydraulic pump driven by piezoelectric stacks that is coupled to a conventional hydraulic cylinder via a set of fast-acting valves. Nowadays, such hybrid actuators are being researched and developed actively in many developed countries by requirement of high performance and compact flight system. In this research, a piezoelectric hybrid actuator has been designed and tested. To achieve bi-directional capabilities in the actuator, solenoid valves were used to control the direction of output fluid. The experimental testing of the actuator in uni-directional and bi-directional modes was performed to examine performance issues related to the solenoid valves. The results showed that the bi-directional performance was slightly lower than uni-directional performance due to air bubble developed in the valve system. A new design to solve the vacuum problem has been proposed to improve the performance of the hybrid actuator.

Keywords

References

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