A DESIGN OF FUZZY RULES FROM INPUT-OUTPUT DATA USING HEDGE ALGEBRAS AND APPLICATION TO CONTROL PROBLEM
Abstract
In this work, we propose a new method able to find fuzzy IF-THEN rules from input
output observations based on hedge algebras and apply this method to the Fan & Plate control
problem (model PP 200). In fact, hedge algebras-based controller (HAC). formulated on the
basis of human knowledge about the process or identified from measured control action, can be
regarded as an emulator of human operator. The simulation shows that the HAC can successfully
control the plate angle of the model PP 200 to the desired position. We do not claim to have
obtained optimal controller in any of the cases, however, the method is effective for removing
inconsistency and redundancy in the process of assembling fuzzy rules. Furthermore, this new
approach is simple even if the number of state variables is large.