Adaptive constant refiner intensity control

Details Adaptive constant refiner intensity control Adaptive constant refiner intensity control

1985-01-31

1987-04-28

Smith, Jerry

Boots, shoes, and leggings

364148, 364162, 241 33, 241 36, 241 37, 162254, 162263, G06F 1546, B02C 714

Patent

active

046619119

ABSTRACT:
A method and an apparatus are provided for maintaining a constant refining intensity under varying tonnage rate and applied power conditions to a slurry of paper stock being passed through a disk type refiner. The system utilizes a control strategy and several unique control algorithms which combine to provide a result which relates the speed of rotation of the refiner elements to the power consumed by the drive motor. The present invention is based on intensity which is defined as the net refining power applied divided by the number of bar crossings (refining elements) per unit time. The system is an adaptive control system which operates on the basis of real time measurements of the refiner process.

REFERENCES:
patent: 3604646 (1971-09-01), Keyes, IV et al.
patent: 3610541 (1971-10-01), Guday
patent: 3654075 (1972-12-01), Keyes, IV et al.
patent: 3711688 (1973-01-01), Stout et al.
patent: 4184204 (1980-01-01), Flohr
patent: 4374703 (1983-02-01), Lebeau et al.
patent: 4498137 (1985-02-01), Flohr
patent: 4589598 (1986-05-01), Ellery, Sr.
"Paper Making Equipment Control", IBM Bulletin, vol. 12, No. 1, Jun. 1969.

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