An algorithm for online self-organization of fuzzy controllers

Authors:
Ana Belén Cara;Héctor Pomares;Ignacio Rojas
Affiliations:
Dept. of Computer Technology and Computer Architecture, University of Granada, Granada, Spain;Dept. of Computer Technology and Computer Architecture, University of Granada, Granada, Spain;Dept. of Computer Technology and Computer Architecture, University of Granada, Granada, Spain
Venue:
IEA/AIE'10 Proceedings of the 23rd international conference on Industrial engineering and other applications of applied intelligent systems - Volume Part II
Year:
2010

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Abstract

This work presents a fuzzy controller capable of designing its own structure online, based on the data obtained during the normal system operation. The algorithm does not use previous information about the differential equations that define the plant's behaviour. The controller may be initially empty, as the method is able to distinguish the important input variables by assigning them more membership functions. With this aim, the method works in two stages: the adaptation of the consequents for every tested topology and the online addition of new membership functions. To show its capabilities, simulation results with a liquid tank system are analyzed.