D.3 Operational implications of optimality

The purpose of this research project is to explore the operational and controllability properties of integrated processes and processes designed to operate at optimal profit. The focus is to develop operating strategies for highly integrated processes. It is well know for simple processes in which the optimum is unconstrained, that mathematically the profit is uncontrollable near the optimal profit if only the product quality itself or some related variable is measured. On the other hand if all states are always measured or available, the maximum profit can be controlled. For integrated process the process non-linearities imply that these processes are often uncontrollable by simple output feedback.