Method of controlling a rotary kiln during start-up

Details Method of controlling a rotary kiln during start-up Method of controlling a rotary kiln during start-up

1988-08-05

1990-03-20

Chin, Gary

Boots, shoes, and leggings

364148, 364200, 3642746, 432 4, 432 24, F26D 700, G06F 1546

Patent

active

049106848

ABSTRACT:
To facilitate a smooth and quick start-up of a rotary kiln, a Fuzzy Logic Control system is proposed, the principal feature of which is to mandate control actions to decrease the specific heat consumption along a straight line from an initial high value to a steady-state value established for the kiln, and then to switch over to an existing steady-state fuzzy logic control mode. In the start-up phase, further process variables are preferably measured and monitored against reference values to mandate concurrent control actions influencing the Fuzzy Logic Control system in a weighted manner.

REFERENCES:
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patent: 4432061 (1984-02-01), Herklotz et al.
patent: 4461616 (1984-07-01), Vukovich, Jr.
patent: 4480992 (1984-11-01), Okamoto
Wolfinger, J. P., "Improving Control of Cement Kilns", Control Engineering, vol. 20, No. 11, pp. 54-56, 1973.
Zadeh, L. A., "Outline of a New Approach to the Analysis of Complex Systems and Decision Processes", IEEE Trans. on Systems, Man & Cybernetics, vol. SMC-3, No. 1, Jan. 1973.
Mamdani, E. H., "Application of Fuzzy Algorithms for the Control of Dynamic Plant", Proc. IEE, vol. 121, No. 12, 1974.
Haspel, D. W., "Application of Rule-Based Control in the Cement Industry", Unicom Seminars, London, Dec. 1985.
King, R. E., "Expert Systems in the Cement Industry", ZKG No. 4, 1987.
Sheridan S. & Skjoth, P., "Automatic Kiln Control at Oregon Portland Cement Company's Durkee Plant, Utilizing Fuzzy Logic", IEEE Texas, May 1983.
"Control of a Cement Kiln by Fuzzy Logic", by L. P. Holmblad and J. J. Ostergarrd, published by North-Holland Publishing Company, 1982.

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