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J. KIMS Technol > Volume 18(3); 2015 > Article
Journal of the Korea Institute of Military Science and Technology 2015;18(3):213-219.
DOI: https://doi.org/10.9766/KIMST.2015.18.3.213   
Performance Evaluation of a Bidirectional Piezoelectric Hybrid Actuator
Xiaolong Jin, Ngocsan Ha, Namseo Goo, Byungwoon Bae, Taeheun Kim, Hanseo Ko, Changseop Lee
1Department of Advanced Technology Fusion, Division of Interdisciplinary Studies, Konkuk University
2The 1st Research R&D Center, FIRSTEC CO.
3Department of Mechanical Engineering, Sungkyunkwan University
4The 1st Research and Development Institute, Agency for Defense Development
양방향 압전-유압 하이브리드 구동장치의 성능 시험
김소룡, 하넉산, 구남서, 배병운, 김태흔, 고한서, 이창섭
1건국대학교 융합인재학부/신기술융합학과
2(주)퍼스텍 기술센터
3성균관대학교 기계공학부
4국방과학연구소 제1기술연구본부
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.
Key Words: Hybrid Actuator, Piezo-Stack, Blocking Force, Solenoid Valve, Bidirectional Mode


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