A small three-way valve for hydraulic actuators using piezoelectric transducers

摘要

Hydraulic actuators has been utilized for various types of robots. However, hydraulic control system for multiple degrees of freedom mechanisms has a large volume because such system needs many control components. The purpose of this research is to develop a small hydraulic flow control valve. In the previous research, we have developed a small flow control valve using particle excitation by a piezoelectric transducer [1], and applied this valve to a hydraulic system. In this research, we have fabricated and evaluated a small three-way valve for further miniaturization.