Response Surface Maps
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Extending the CCD model to a broad range of combinations of factors and levels allows for a continuous nonlinear surface to be plotted graphically that allows prediction of the response to variation in the factors.
RESPONSE SURFACE MAPS
Extending the CCD
model to a broad range of combinations of factors and levels allows for a
continuous nonlinear surface to be plotted graphically that allows prediction
of the response to variation in the factors (Myers and Montgomery, 1995). In
the previous example, the response surface study begins when the process is
near the optimum. At this point, it is desirable to accurately approximate the
true response function within a small region around the opti-mum, recognizing
that the true response exhibits curvature near this location. Sequential
experiments are performed within some region of variable space identified as
the operability region (OR). It is unlikely that the entire OR would be explored.
Usually a region of interest (experimentation) around inflections in the OR
will be investigated. The objectives of response surface methodology are
generally mapping over a particular region of interest; optimization of the
response; or selecting operating conditions to achieve specifications.
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