First-order interval type-2 TSK fuzzy logic systems using a hybrid learning algorithm

Authors:
Gerardo M. Mendez;Ismael Lopez-Juarez
Affiliations:
Department of Electromechanical and Electronics Engineering, Nuevo Leon Institute of Technology, Guadalupe, NL, Mexico;CIATEQ A.C., Advanced Technology Centre, Querétaro, Mexico
Venue:
ICAI'05/MCBC'05/AMTA'05/MCBE'05 Proceedings of the 6th WSEAS international conference on Automation & information, and 6th WSEAS international conference on mathematics and computers in biology and chemistry, and 6th WSEAS international conference on acoustics and music: theory and applications, and 6th WSEAS international conference on Mathematics and computers in business and economics
Year:
2005

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Abstract

This article presents a new learning methodology based on a hybrid algorithm for interval type-2 TSK fuzzy logic systems (FLS). Using input-output data pairs during the forward pass of the training process, the interval type-2 TSK FLS output is calculated and the consequent parameters are estimated by recursive least-squares (RLS) method. In the backward pass, the error propagates backward, and the antecedent parameters are estimated by back-propagation (BP) method. The proposed hybrid methodology was used to construct an interval type-2 TSK fuzzy model capable of approximating the behaviour of the steel strip temperature as it is being rolled in an industrial Hot Strip Mill (HSM) and used to predict the transfer bar surface temperature at the finishing Scale Breaker (SB) entry zone. Comparative results show the advantage of the hybrid learning method RLS-BP over BP.