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TECHNICAL BRIEFS

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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References

Tummala, R. R., and Rymaszewski, E. J., 1989, Microelectronic Packaging Handbook, Van Nostrand-Reinhold, New York.
Razbzn, A., 1993, “Intelligent Control of an Automated Adhesive Dispensing Cell,” Ph.D. Thesis, Imperial College, London, UK.
Razban,  A., and Davies,  B. L., 1995, “Analytical Modelling of the Automated Dispensing of Adhesive Material,” J. Adhes. Sci. Technol., 9, pp. 1435–1450.
West,  A. A., Williams,  D. J., and Hinde,  C. J., 1995, “Experience of the Application of Intelligent Control Paradigms to Real Manufacturing Processes,” Proc. Inst. Mech. Eng., 209, Pt. 1, pp. 293–308.
Dixon,  D. , 1997, “Practical Issues Concerning Dispensing Pump Technologies,” Circuits Assembly, August, pp. 36–40.
Andersen, B. W., 1967, The Analysis and Design of Pneumatic Systems, John Wiley and Sons.
Schuder,  C. B., and Binder,  R. C., 1959, “The Response of Pneumatic Transmission Lines to Step Inputs,” ASME J. Basic Eng., 81, pp. 578–584.
Brown,  F. T., 1962, “The Transient Response of Fluid Lines,” ASME J. Basic Eng., 84, pp. 547–553.
Iberall,  A. S., 1951, “Attenuation of Oscillatory Pressures in Instrument Lines,” J. Res. Natl. Bur. Stand., 45, pp. 85–108.
Bradner,  M., 1949, “Pneumatic Transmission Lines,” Instruments, 22, pp. 618–625.
Rohmann,  C. P., and Grogan,  E. C., 1957, “On the Dynamics of Pneumatic Transmission Lines,” Trans. ASME, 79, pp. 853–867.
Hougen,  J. O., Martin,  O. R., and Walsh,  R. A., 1963, “Dynamics of Pneumatic Transmission Lines,” Control. Eng., 10, pp. 114–117.
Skelland, A. H. P., 1967 Non-Newtonian Flow and Heat Tranfer, New York: John Wiley and Sons.
Chen,  X. B., Schoenau,  G., and Zhang,  W. J., 2000, “Modelling of Time-Pressure Fluid Dispensing Processes,” IEEE Transactions on Electronics Packaging Manufacturing, 23(4), pp. 300–305.
Chen, X. B., 2002, “Modelling and Off-Line Control of Fluid Dispensing for Electronics Packaging,” Ph.D. Thesis, Univ. of Saskatchewan, Saskatoon, Canada.

Figures

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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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