Thickener operations at Carajas using a fuzzy logic controller

Author

Santos, Rhaufed Rodrigues ; Meech, J.A. ; Ramos, Luciano Tadeu Silva

Author_Institution

Companhia Vale do Rio Doce, Carajas, Brazil

Volume

2

fYear

1995

fDate

22-25 Oct 1995

Firstpage

1636

Abstract

This paper details development of a fuzzy logic controller at Carajas iron ore mine and its implementation within Comdale/X-an off-line expert system development tool. The controller provides advice about operating two 80 m diameter slime thickeners. Creation of the fuzzy sets and rules involved a knowledge engineer and expert-operator working together for a period of about 8 hours. System refinement and addition of adaptive techniques took another day´s work. The controller is based on a heuristic model using the expertise of one of CVRD´s most-experienced operators

Keywords

flow control; fuzzy control; fuzzy set theory; knowledge based systems; mineral processing industry; mining; Carajas iron ore mine; Comdale/X; fuzzy logic controller; fuzzy rules; fuzzy sets; heuristic model; mining; off-line expert system development tool; slime thickeners; Control systems; Expert systems; Feeds; Fuzzy logic; Iron; Knowledge engineering; Minerals; Ores; Protection; Thickness control;

fLanguage

English

Publisher

ieee

Conference_Titel

Systems, Man and Cybernetics, 1995. Intelligent Systems for the 21st Century., IEEE International Conference on

Conference_Location

Vancouver, BC

Print_ISBN

0-7803-2559-1

Type

conf

DOI

10.1109/ICSMC.1995.538007

Filename

538007