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Performance Evaluation of a Bidirectional Piezoelectric Hybrid Actuator

Xiao Long Jin, Ngoc San Ha, Nam Seo Goo, Tae Heun Kim, Byung Woon Bae, Chang Seop Lee

Abstract


Piezoelectric-based hydraulic actuator is a hybrid device of a hydraulic pump driven by piezoelectric stacks which 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 was designed and tested. To achieve bi-directional capabilities in the actuator, the commercial solenoid valves were used to control the direction of output cylinder. The experimental testing of the actuator in unidirectional and bi-directional modes was performed to examine performance issues related to the solenoid valves. The results showed that the maximum blocked force was measured by 826.0N when the frequency was 150Hz.

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References


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DOI: http://dx.doi.org/10.21535%2FProICIUS.2014.v10.243

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