A spatio-temporal fuzzy logic system for process control

Authors:
Han-Xiong Li;Xiao-Gang Duan
Affiliations:
School of Mechanical & Electrical Eng., Central South University, China and Dept of MEEM, City University of Hong Kong;School of Mechanical & Electrical Eng., Central South University, China
Venue:
SMC'09 Proceedings of the 2009 IEEE international conference on Systems, Man and Cybernetics
Year:
2009

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Abstract

A novel application of type-2 fuzzy system is presented by developing a spatio-temporal fuzzy logic controller (FLC) for the distributed parameter system (DPS). The novel difference to the type-2 fuzzy system is to apply the secondary MF for a different physical variable - space domain. Using a number of sensors located on the spatial domain, the 3D fuzzy membership function can be obtained that contains spatio-temporal information. The 3D inference will include spatial T-norm operation and the traditional rule inference. The type-reduction will become the spatial reduction before the traditional defuzzification. This spaitio-temporal FLC is successfully applied to a catalytic reaction rod to demonstrate its effectiveness and potential to a wide range of engineering applications.