Fuzzy logic membership function generating apparatus

Details Fuzzy logic membership function generating apparatus Fuzzy logic membership function generating apparatus

1995-07-20

1998-04-07

Davis, George B.

395 51, 395900, G06F 944

Patent

active

057374929

ABSTRACT:
A digital fuzzy logic processor for generating output data representing a degree of membership function, specifically, a complement-generating circuit that generates complement data for outputting to a one's-complement circuit to determine a degree of membership output. The digital fuzzy logic processor includes an input port, a memory unit for storing a plurality of data and a prescaled base-distance-slope product table, a subtracting and multiplexer circuit to generate relative location signals and relative distance data, and a control unit that controls the processor. The logic processor further includes a pre-scale shifter to generate prescaled relative distance data, an address generator to generate a table address to retrieve a base-distance-slope product from the prescaled base-distance-slope product table, and a post scalar shifter to shift prescaled base-distance-slope products to generate complement data. Also included in the processor are a one's-complement circuit and a multiplexer to generate output data representing a degree of membership function.

REFERENCES:
patent: 5287472 (1994-02-01), Hovst
patent: 5491775 (1996-02-01), Madau et al.
patent: 5524174 (1996-06-01), Eichfeld et al.

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