Circuit for computing membership function values in a fuzzy logi

Details Circuit for computing membership function values in a fuzzy logi Circuit for computing membership function values in a fuzzy logi

1995-03-21

1997-03-25

Downs, Robert W.

395 61, 395 51, 395900, G06G 700

Patent

active

056153031

ABSTRACT:
Circuit for calculation of values of membership functions in a controller operating with fuzzy logic procedures. The membership functions are of triangular or trapezoidal form and are defined in a so-called discourse universe discretized in a finite number of points. The controller includes a central control unit equipped with a memory section for storage of said membership functions, a microprocessor, and an interface. The membership functions are stored by means of a codification of the coordinate of the vertex and the slopes at the sides of the vertex. The circuit includes a calculator connected to the memory section, the microprocessor, and the interface, to determine the value of each membership functions at each point of the discourse universe using the stored vertex and slopes.

REFERENCES:
patent: 5179629 (1993-01-01), Nakamura
patent: 5343553 (1994-08-01), Miyazawa et al.
patent: 5410633 (1995-04-01), Ota et al.

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