Optimization of orifice position in particle-excitation valve for proportional flow control

Daisuke Hirooka, Tomomi Yamaguchi, Naomichi Furushiro, Koichi Suzumori, Takefumi Kanda

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


This paper reports an improvement of the particle-excitation flow control valve. The valve that we have designed in previous reports can control air flow, using particle excitation by piezoelectric resonance, and has the following advantages: small size, lightweight, high response and continuous airflow control. However, in our previous models, the relationship between the driving voltage and the flow quantity was nonlinear. In this report, we improved the valve to realize proportional flow control. The valve consists of the orifice plate, that has some orifices, and steel particles to seal the orifices and piezoelectric transducer. It controls air flow by the voltage applied to the transducer. For proportional flow control, it is important to adjust the orifice position adequately. In this report, we optimized the orifice position, considering resonance condition of the valve. We designed the experimental prototype using a bolt-clamped Langevin type transducer and decided orifice position. And we evaluated its vibration properties and flow-rate characteristics. The experimental results showed that our designed prototype can proportionally control airflow.

Original languageEnglish
Article number25
JournalROBOMECH Journal
Issue number1
Publication statusPublished - Dec 1 2017


  • Flow control valve
  • PZT
  • Pneumatic actuator
  • Pneumatic valve
  • Proportional flow control valve

ASJC Scopus subject areas

  • Modelling and Simulation
  • Instrumentation
  • Mechanical Engineering
  • Control and Optimization
  • Artificial Intelligence


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