A meaningful infinite-values switching function-fuzzy threshold function and its application to process control

The author previously defined (1991) an infinite-valued switching function, called the fuzzy threshold function, on an extended logic system and showed that process control using the fuzzy threshold functions is 50 times faster than fuzzy control by the MAX-MIN-CG (center of gravity) method. The procedure of process control using the fuzzy threshold functions is discussed in terms of multivalued logic to show the problems remaining. The method is compared with the simplified fuzzy control method.<
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