Title :
A high-speed reconfigurable defuzzification architecture for true centre-of-gravity computations
Author :
Lees, M.J. ; Campbell, D.A. ; Devlin, J.C.
Author_Institution :
Sch. of Electron. Eng., La Trobe Univ., Bundoora, Vic., Australia
Abstract :
An application specific parallel defuzzification architecture is presented which is capable of performing high-speed true centre-of-gravity (CoG) computations. This architecture uses values determined by the integrals of the output membership functions (MFs), as opposed to using singleton values. This is done by storing pre-calculated values of areas and moments within embedded memory blocks. During run-time the defuzzification processor uses these individual pre-calculated values to compute the final CoG result. The design is especially well suited for families of high capacity complex programmable logic devices (CPLDs) that have a large number of I/O pins and whose ability to be reconfigured allows the application specific pre-calculated structure to be practical for real world systems
Keywords :
fuzzy systems; inference mechanisms; parallel architectures; programmable logic devices; reconfigurable architectures; I/O pins; application specific parallel defuzzification architecture; application specific pre-calculated structure; defuzzification processor; embedded memory blocks; high capacity complex programmable logic devices; high-speed reconfigurable defuzzification architecture; high-speed true centre-of-gravity computation; output membership function integrals; pre-calculated area value storage; pre-calculated moment value storage; real world systems; Computer architecture; Concurrent computing; Fuzzy systems; Hardware; High performance computing; Inference algorithms; Pins; Programmable logic devices; Runtime; Table lookup;
Conference_Titel :
Intelligent Information Systems, 1996., Australian and New Zealand Conference on
Conference_Location :
Adelaide, SA
Print_ISBN :
0-7803-3667-4
DOI :
10.1109/ANZIIS.1996.573941