This includes the many interactions among the
variables.Fortunately,between operating personnel
and theorists,most if not all of the key macro-variables
(independent,dependent, disturbances, etc.)impacting
and describing the state of the process are known.
Thus a field system incorporating a computer-aided
control system design capability must generate
multivariable control models with extensive interactions
and allow the easy addition of knowledge gained from
pasonnel operating the facility