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http://dx.doi.org/10.9766/KIMST.2015.18.3.213

Performance Evaluation of a Bidirectional Piezoelectric Hybrid Actuator  

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)
Publication Information
Journal of the Korea Institute of Military Science and Technology / v.18, no.3, 2015 , pp. 213-219 More about this Journal
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
Hybrid Actuator; Piezo-Stack; Blocking Force; Solenoid Valve; Bidirectional Mode;
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