Flow control valve for pneumatic actuators using particle excitation by PZT vibrator

Hirooka, Daisuke; Suzumori, Koichi; Kanda, Takefumi

doi:10.1016/j.sna.2009.07.005

Cited by 30 publications

(9 citation statements)

References 5 publications

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“…In previous report, we demonstrated its basic structure and confirmed that it has potential to provide a large flow rate [29]. We showed new mechanism of the valve using deferent types of particles for stable flow control [30].…”

Section: Introductionsupporting

confidence: 64%

“…Firstly, we explain the basic principle of the previously designed particle-excitation mechanism [29]. Figure 1 shows a cross section of a flow control valve and establishes its basic working principle using particle excitation.…”

Section: Basic Control Mechanism Of Particle Excitationmentioning

confidence: 99%

“…The orifice opening condition is determined by the balance between the pneumatic force and the particle's vibrational force [29]. The pneumatic force is decided by:…”

Section: Basic Control Mechanism Of Particle Excitationmentioning

confidence: 99%

“…A valve with displacement amplifier mechanisms is heavy and large. We designed flow control valves using particle excitation mechanism whose advantages are small size and high response [29][30][31][32]. This control mechanism uses PZT resonance frequency and does not need the displacement amplifier mechanism.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2017

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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 boltclamped Langevin type transducer and decided orifice position. And we evaluated its vibration properties and flowrate characteristics. The experimental results showed that our designed prototype can proportionally control airflow.

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Section: Introductionsupporting

confidence: 64%

Section: Basic Control Mechanism Of Particle Excitationmentioning

confidence: 99%

“…The orifice opening condition is determined by the balance between the pneumatic force and the particle's vibrational force [29]. The pneumatic force is decided by:…”

Section: Basic Control Mechanism Of Particle Excitationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

et al. 2017

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“…While lightweight materials have been actively applied to hydraulic valves for addressing this problem, due consideration was not paid to the driving principle: using large electromagnetic motors and complicated configurations. Therefore, this study aims to miniaturize the control valve by using a new driving method developed for pneumatic systems [3], [4]. This valve is smaller and lighter than conventional flow control valves for pneumatic.…”

mentioning

confidence: 99%

A small water flow control valve using particle excitation by PZT vibrator

Ukida

Suzumori

Nabae

et al. 2015

ICAM

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Hydraulic proportional valves generally suffer from their large size and heavy weight due to their complicated structures using large solenoids or motors. Therefore, they have some limitations of design or decrease mobility of hydraulic systems. In this paper, we present a small hydraulic flow control valve using particle excitation by a PZT vibrator. This valve can control the flow rate of water by the applied voltage to the PZT vibrator. The prototype of the proposed valve evaluated the relationship between the applied voltage, the impressed pressure, and the flow rate. This fundamental evaluation successfully indicated the flow-controllability of the proposed valve.

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