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Process Variability in Micro-EmbossingHardt, David E., Ganesan, Bala, Dirckx, Matthew, Shoji, Grant, Thaker, Kunal, Qi, Wang 01 1900 (has links)
A promising technique for the large-scale manufacture of micro-fluidic devices and photonic devices is hot embossing of polymers such as PMMA. Micro-embossing is a deformation process where the workpiece material is heated to permit easier material flow and then forced over a planar patterned tool. While there has been considerable, attention paid to process feasibility very little effort has been put into production issues such as process capability and eventual process control. In this paper, we present initial studies aimed at identifying the origins and magnitude of variability for embossing features at the micron scale in PMMA. Test parts with features ranging from 3.5- 630 µm wide and 0.9 µm deep were formed. Measurements at this scale proved very difficult, and only atomic force microscopy was able to provide resolution sufficient to identify process variations. It was found that standard deviations of widths at the 3-4 µm scale were on the order of 0.5 µm leading to a coefficient of variation as high as 13%. Clearly, the transition from test to manufacturing for this process will require understanding the causes of this variation and devising control methods to minimize its magnitude over all types of parts. / Singapore-MIT Alliance (SMA)
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On performance assessment of feedback control loops /Ko, Byung-su, January 2000 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 2000. / Vita. Includes bibliographical references (leaves 174-179). Available also in a digital version from Dissertation Abstracts.
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Modelling and optimal control of fed-batch fermentation process for the production of yeast /Mkondweni, Ncedo S. January 1900 (has links)
Thesis (MTech (Electrical Engineering))--Peninsula Technikon, 2002. / Word processed copy. Summary in English. Includes bibliographical references (leaves 147-155). Also available online.
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Dynamic data reconciliation using process simulation software and model identification toolsAlici, Semra 14 March 2011 (has links)
Not available / text
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Some applications of reliability theory to chemical engineering designBloom, Bert Michael, 1945- January 1969 (has links)
No description available.
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Model-based analyses of human performance in two process control tasksReidy, Maureen Ann 12 1900 (has links)
No description available.
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Interaction measures for nonsquare decentalized control structuresReeves, Deborah Edwards 05 1900 (has links)
No description available.
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A comprehensive approach to control configuration design for complex systemsReeves, Deborah Edwards 05 1900 (has links)
No description available.
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A methodology for the synthesis of robust decentralized control systemsChiu, Min-Sen 05 1900 (has links)
No description available.
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Real time control of combustor and engine processesChristopher, Matthew L. 05 1900 (has links)
No description available.
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