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Performance Evaluation of a Bidirectional Piezoelectric Hybrid Actuator
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 Title & Authors
Performance Evaluation of a Bidirectional Piezoelectric Hybrid Actuator
Jin, Xiaolong; Ha, Ngocsan; Goo, Namseo; Bae, Byungwoon; Kim, Taeheun; Ko, Hanseo; Lee, Changseop;
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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
Hybrid Actuator;Piezo-Stack;Blocking Force;Solenoid Valve;Bidirectional Mode;
 Language
Korean
 Cited by
 References
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