Method of controlling photographic emulsion manufacturing proces

Details Method of controlling photographic emulsion manufacturing proces Method of controlling photographic emulsion manufacturing proces

1990-02-09

1991-07-23

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

364149, 364150, 364151, G03C 102

Patent

active

050343122

ABSTRACT:
A method of controlling a photographic emulsion manufacturing process by non-linear approximation, wherein the set of (k) of a plurality of process inputs, the set (k) of a plurality of states, such as the silver halide concentration, the set (k) of a plurality of process outputs, such as the potential of silver and the pH value, and an evaluation function J (k) are defined, so that a feedback matrix .sub.b (k) and a feed-forward control matrix .sub.f (k) which minimize said evaluation function J (k) are obtained and that manipulated variables which are to be applied to a plant is calculated from the obtained feedback matrix .phi..sub.b (k) and feed-forward matrix .sub.f (k).

REFERENCES:
patent: 4184877 (1980-01-01), Maternagnan
patent: 4378427 (1983-03-01), Byer
Cremer, "Chem. Eng. Practice", 1966, vol. 9, pp. 316, 317, 340, 341.
Bamberger et al., "Adaptive On-Line Optimization . . .", pp. 543-550, 1977.
Landau, "Algorithms For Discrete Time Model . . .", pp. 1-11, 1975.

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