On integration with respect to a dependent variable

two closed-loop parameters associated with the moisture and basis weight loop, and one for a cascaded dry-stock flow loop. The actual parameters in the control algorithms, which may amount to as many as 50, are all slaved to these selected ones. The computer tuning method requires knowledge of the process dynamics. A total of 14 dynamic parameters characterizing these dynamics are computed by the identifier program. Data collected with the process in open-loop operation during transient upsets of the manipulated inputs are used. These upsets have to be of relatively short duration and also of small amplitude so that production