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

Hayato Osaki, Takefumi Kanda, Shoki Ofuji, Norihisa Seno, Koichi Suzumori, Takahiro Ukida, Hiroyuki Nabae

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Robots composed of hydraulic actuators have been utilized in various fields and at disaster sites. However, the hydraulic control system for multiple-degree-of-freedom mechanisms is large because such systems require many control components. The purpose of this research was to develop a small hydraulic flow control valve. This paper describes the fabrication and evaluation of a small three-way valve by particle excitation using a piezoelectric transducer. This valve consists of two transducers and can switch the inlet and outlet ports by applying an AC voltage of different driving frequencies to each transducer because each transducer has different resonant frequencies. The flow rate was controlled by applying a voltage to the piezoelectric transducer. We evaluated the vibration characteristics of the fabricated three-way valve. The vibration velocity exhibited peaks at 120 and 155 kHz for the inlet and outlet port, respectively, and that of each transducer increased with the applied voltage. Therefore, this three-way valve can switch the opening port by changing the driving frequencies and continuously controlling the flow rate. As a result, we have succeeded in driving the novel small three-way valve.

Original languageEnglish
Pages (from-to)500-510
Number of pages11
JournalAdvanced Robotics
Volume32
Issue number9
DOIs
Publication statusPublished - May 3 2018

Keywords

  • Flow rate control
  • hydraulic actuators
  • particle excitation
  • piezoelectric transducer
  • three-way valve

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Software
  • Human-Computer Interaction
  • Hardware and Architecture
  • Computer Science Applications

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