
149Reformulation of Potline Control
Exercises
1. Considering the exemplar processes given early in this chapter, what
are the three general considerations that lead to the denition of an
operating and control envelope for an industrial process?
2. What control elements need to be reconsidered in order to achieve
such a control envelope? What is the central reason why this change
in control formulation is necessary, thinking of the failures in auto-
matic control revealed in this chapter, in particular?
3. What three questions most occupy the minds of people working in
an organization? How are the answers to the rst two connected to
the control ...