On the Flow Rate Dynamics in Time-Pressure Dispensing Processes

[+] Author and Article Information
X. B. Chen, G. Schoenau, W. J. Zhang

Department of Mechanical Engineering, University of Saskatchewan, 57 Campus Dr., Saskatoon, SK S7N 5A9, Canada e-mail: xbc719@mail.usask.ca

J. Dyn. Sys., Meas., Control 124(4), 693-698 (Dec 16, 2002) (6 pages) doi:10.1115/1.1514058 History: Received February 01, 2001; Revised February 01, 2002; Online December 16, 2002
Copyright © 2002 by ASME
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Schematic diagram of a typical time-pressure dispensing system
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Schematic diagram of a pneumatic solenoid valve
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Schematic diagram of a pneumatic transmission line
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Chamber of a variable volume of air.
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Flow chart for representing the pressure built up in the syringe
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Forces acting on the vertical annular element of fluid in a needle
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Schematic of experimental settings
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Step response measured at the outlet of the air supply controller with the transmission line disconnected
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Step responses measured in the transmission line with one end closed
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Flow chart of simulating the amount of dispensed fluid
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Comparison of the measured amount of the fluid dispensed and the model prediction under a pulse pressure with the width of 70 ms
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Comparison of the measured amount of the fluid dispensed and the model prediction under a pulse pressure with the width of 120 ms



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