METHOD OF OPERATING A MULTI-VARIABLE PROCESS
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United States of America
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Feb 13, 2025
app pub date -
Jul 31, 2024
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Jul 31, 2024
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Abstract
A method of operating a multi-variable process comprises deriving a multi-dimensional representation of the process variables according to individual co-ordinate axes, defining a feasible region of the process variables by selecting from an accumulation of historical sets of values of all the variables, obtained from multiple operations of the process, to define an operational envelope containing a set of data points for which the product qualities are within predetermined limits, calculating the convex hull of this set of data points, determining an interior hypercube inside the convex hull, the interior hypercube having sides that are parallel to each axis, and then operating the process with the process variables as defined within the interior hypercube.
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