Title :
Current-mode analogue defuzzifier
Author :
Pelayo, F.J. ; Rojas, I. ; Ortega, Julio ; Prieto, A.
Author_Institution :
Granada Univ., Spain
fDate :
4/29/1993 12:00:00 AM
Abstract :
A CMOS current-mode approach for implementing the defuzzification function in analogue fuzzy controllers is proposed. The circuit computes the centre of area of the output fuzzy conclusion using switched current adders and a current divider. Simulation results of the defuzzifier show how the circuit can produce a good approximation of the centre of area even if a small number of levels are used to quantise the output variable.
Keywords :
CMOS integrated circuits; adders; analogue processing circuits; controllers; dividing circuits; fuzzy control; switched networks; CMOS current-mode approach; HSPICE simulation; analogue fuzzy controllers; centre of area; current divider; defuzzification function; membership function; switched current adders;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19930498
