Controlling system for cardboard-sheet manufacturing apparatus
AssigneeMitsubishi Heavy Industries, Ltd.
InventorsHiroshi ISHIBUCHI, Tsunehiro Kawashima
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Abstract
A controlling system for a cardboard-sheet manufacturing apparatus includes an FF/FB controlling unit, a PID controller, and a knowledge database. The FF/FB controlling unit differentiates between compensation for a dynamic characteristic and that for a static characteristic based on the knowledge database, and switches between FF control and FB control. The PID controller operates based on a two-degree-of-freedom PID algorithm. The FF/FB controlling unit adjusts a feedback gain based on information stored in the knowledge database.
Claims9
A controlling system for a cardboard-sheet manufacturing apparatus comprising:
- a first control unit that performs at least one of feedforward control and feedback control for manufacturing of a cardboard sheet to control at least one of temperature and moisture content of the cardboard sheet in process to a target value;
- an information providing unit that stores therein information on evaluation of the cardboard sheet manufactured, information on any one of the temperature and the moisture content of the cardboard sheet in process, and information related to the manufacturing of the cardboard sheet in an associated manner;
- and
- a second control unit that changes control parameters of the feedforward control and the feedback control based on the information stored in the information providing unit.
Dependencies are inferred from the claim text.