Development of a Poppet-Type Pneumatic Servo Valve

Kanno, Takahiro; Hasegawa, Takashi; Miyazaki, Tetsuro; Yamamoto, Nobuyuki; Haraguchi, Daisuke; Kawashima, Kenji

doi:10.3390/app8112094

Open AccessFeature PaperArticle

Development of a Poppet-Type Pneumatic Servo Valve

by

Takahiro Kanno

^1,†

,

Takashi Hasegawa

^1,†,

Tetsuro Miyazaki

¹,

Nobuyuki Yamamoto

²,

Daisuke Haraguchi

² and

Kenji Kawashima

^1,*

¹

Tokyo Medical and Dental University, 2-3-10, Kanda Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan

²

RiverField Inc., Yotsuya Medical Bldg. 5th floor, 20 Samon-cho, Shinjuku-ku, Tokyo 160-0017, Japan

^*

Author to whom correspondence should be addressed.

^†

These authors contributed equally to this work.

Appl. Sci. 2018, 8(11), 2094; https://doi.org/10.3390/app8112094

Submission received: 10 October 2018 / Revised: 30 October 2018 / Accepted: 30 October 2018 / Published: 31 October 2018

(This article belongs to the Special Issue Advanced Mobile Robotics)

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Abstract

In pneumatic positioning and force-control systems, spool-type servo valves are widely used for obtaining quick responses and precise control. However, air leakage from these valves results in increased energy consumption. To address this problem, we developed a three-port poppet-type servo valve to reduce air leakage. The developed valve consists of a camshaft, two orifices, two metal balls, and a housing with two flow channels. The metal ball is pushed by fluid, and spring force closes the orifice. The port opens when the cam rotates and pushes the ball. The cam shape and orifice size were designed to provide the desired flow rate. The specifications of the DC motor for rotating the camshaft were determined considering the fluid force on the ball. Static and dynamic characteristics of the valve were measured. We experimentally confirmed that air leakage was 0.1 L/min or less. The ratio of air leakage to maximum flow rate was only 0.37%. Dynamic characteristic measurements showed that the valve had a bandwidth of 30 Hz. The effectiveness of the valve was demonstrated through experiments involving pressure and position control.

Keywords: servo valve; pneumatics; position control

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MDPI and ACS Style

Kanno, T.; Hasegawa, T.; Miyazaki, T.; Yamamoto, N.; Haraguchi, D.; Kawashima, K. Development of a Poppet-Type Pneumatic Servo Valve. Appl. Sci. 2018, 8, 2094. https://doi.org/10.3390/app8112094

AMA Style

Kanno T, Hasegawa T, Miyazaki T, Yamamoto N, Haraguchi D, Kawashima K. Development of a Poppet-Type Pneumatic Servo Valve. Applied Sciences. 2018; 8(11):2094. https://doi.org/10.3390/app8112094

Chicago/Turabian Style

Kanno, Takahiro, Takashi Hasegawa, Tetsuro Miyazaki, Nobuyuki Yamamoto, Daisuke Haraguchi, and Kenji Kawashima. 2018. "Development of a Poppet-Type Pneumatic Servo Valve" Applied Sciences 8, no. 11: 2094. https://doi.org/10.3390/app8112094

APA Style

Kanno, T., Hasegawa, T., Miyazaki, T., Yamamoto, N., Haraguchi, D., & Kawashima, K. (2018). Development of a Poppet-Type Pneumatic Servo Valve. Applied Sciences, 8(11), 2094. https://doi.org/10.3390/app8112094

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

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Development of a Poppet-Type Pneumatic Servo Valve

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