Synthesis of Fuzzy Membership Function Circuits with Multiple Inputs and Their Applications

Fumio UENO  Takahiro INOUE  Yuji SHIRAI  Mamoru SASAKI  

Publication
IEICE TRANSACTIONS (1976-1990)   Vol.E71   No.1   pp.77-87
Publication Date: 1988/01/25
Online ISSN: 
DOI: 
Print ISSN: 0000-0000
Type of Manuscript: PAPER
Category: Computer Hardware and Design
Keyword: 


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Summary: 
In this paper, two synthesis methods of fuzzy membership function circuits with multiple inputs are proposed. By using bounded-differences expressions, membership function representations suitable for logic circuits in current mode is obtained. In bounded-difference expressions, bounded-difference, switch function and algebraic sum are used. Since these operations can be realized by MOS current-mirrors, MOS pass-transistors and wired-sum connections, the membership function circuits with multiple inputs can be built with these circuit elements. Therefore the synthesized circuits can be implemented in MOS IC forms. The potential applications of the membership function circuits with multiple inputs are real-time inference engine and fuzzy ROM.