Patent · US Expired

Analog fuzzy logic controller for posterior alteration of fuzzy rules

US5790756A · kind A · utility

1Cited by

4References

12Claims

0Family size

Assignee

GMD - Forschungszentrum Informationstechnik GmbH · DE

Inventors

Liliane Peters · Bonn, DE
Klaus Beck · Oberkochen, DE
Shuwei Guo · Siegburg, DE

Key dates

Filing date	Sep 10, 1996
Grant date	Aug 4, 1998
Priority date	—
Expiry date	Sep 10, 2016

Classification

Technology area (CPC G)Physics
CPC primaryG05B13/0275
WIPO fieldControl
WIPO sectorInstruments

Abstract

The analog fuzzy logic controller includes a fuzzification circuit by which the position and the shape of the membership functions associated with the linguistic input variables may be adjusted in an analog manner from outside. The output signals corresponding to the fuzzy values of the fuzzification circuit are supplied to an inference circuit. The output of the inference circuit is provided with a plurality of analog multiplex circuits with which the association of a degree of membership of a fuzzy rule to one or a plurality of linguistic output variables may be influenced. The defuzzification circuit of the fuzzy controller, which receives the output signals from the inference circuit, then calculates the output signals of the fuzzy controller according to the center of gravity method.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.