Optimal parameter estimation for the onl
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Eric J. Klein; W. Fred Ramirez
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Article
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2002
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American Institute of Chemical Engineers
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English
β 286 KB
π 2 views
## Abstract The use of optimal parameter estimation for the online regulation of final etch depth in an ion milling process is described. A modelβbased control system utilizes a 3βD surface evolution model to predict dynamic surface profiles and etch depth. A heterodyne laser interferometer is used