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Research Papers

Design, Model, and Experimental Validation of a Pneumatic Boost Converter

[+] Author and Article Information
Tyler J. Gibson

Laboratory for the Design and Control of
Energetic Systems,
Department of Mechanical Engineering,
Vanderbilt University,
Nashville, TN 37212

Eric J. Barth

Laboratory for the Design and Control of
Energetic Systems,
Department of Mechanical Engineering,
Vanderbilt University,
Nashville, TN 37212
e-mail: eric.j.barth@vanderbilt.edu

Contributed by the Dynamic Systems Division of ASME for publication in the JOURNAL OF DYNAMIC SYSTEMS, MEASUREMENT,AND CONTROL. Manuscript received July 13, 2017; final manuscript received July 30, 2018; published online September 10, 2018. Assoc. Editor: Zongxuan Sun.

J. Dyn. Sys., Meas., Control 141(1), 011004 (Sep 10, 2018) (10 pages) Paper No: DS-17-1355; doi: 10.1115/1.4041062 History: Received July 13, 2017; Revised July 30, 2018

This paper presents the design and dynamic model for a novel prototype pneumatic boost converter, a device developed to be an energetic equivalent to the electrical boost converter. The design of the system selects pneumatic components that are energetically equivalent to the components used in the analogous system in the electrical domain. A dynamic model for the pneumatic boost converter that describes the rapidly fluctuating pressures and volumes is developed. Movement within the system and mass flow through orifices connecting control volumes are also modeled. A prototype was developed to reclaim air at 653 kPa (80 psig) and experimental pressure data were collected at the inlet and outlet of the system. These experimental data are used to validate the dynamic model by comparing experimental and simulated pressures. The experimental data are also used to calculate the total energy reclaimed by the pneumatic boost converter as well as the system efficiency.

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References

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Figures

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Fig. 1

Circuit diagram of an electrical boost converter

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Fig. 2

Pneumatic boost converter prototype schematic

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Fig. 3

Pneumatic boost converter bond graph

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Fig. 4

Annotated photograph of the pneumatic boost converter with close-up views of the adjuster, vent, and system inlet

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Fig. 5

Experimental and simulated exhaust pressures with roughly 653 kPa (80 psig) supply pressure and an L2 of 91.4 mm

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Fig. 6

Experimental and simulated tank pressures with roughly 653 kPa (80 psig) supply pressure and an L2 of 91.4 mm

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Fig. 7

Experimental and simulated exhaust pressures with roughly 653 kPa (80 psig) supply pressure and an L2 of 53.3 mm

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Fig. 8

Experimental and simulated tank pressures with roughly 653 kPa (80 psig) supply pressure and an L2 of 53.3 mm

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Fig. 9

Experimental and simulated exhaust pressures with roughly 584 kPa (70 psig) supply pressure and an L2 of 116.8 mm

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Fig. 10

Experimental and simulated tank pressures with roughly 584 kPa (70 psig) supply pressure and an L2 of 116.8 mm

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Fig. 11

Experimental exhaust pressures from six consecutive actuations overlaid

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Fig. 12

Experimental tank pressures from six consecutive actuations overlaid

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Fig. 13

Experimental and simulated results at 653 kPa (80 psig) supply

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