Fuzzy coprocessor aims at auto market The SAE 81C99 fuzzy coprocessor
targets automotive and industrial control. It has an 8-bit host interface
and offloads fuzzy calculations at a peak rate of 7.8 million rules/s at
20 MHz. The coprocessor takes 1 ms to calculate a crisp 8-bit output from
12 inputs and 3,000 rules. The customer can program several algorithms.
Rule weights use either the MIN-MAX or MIN-BSUM method. Inference can be
performed with either MAX or BSUM, and defuzzification with either the
center-of-gravity or mean-of-maxima method. The fuzzy coprocessor can
process up to 256 inputs, 64 outputs, and 16,384 rules. A complete
software development system is available from Inform Gmbh, Aachen,
Germany. (SAE 81C99 fuzzy coprocessor, $32–engineering samples now, prod
qty, 4th qtr.) Siemens Corp., Santa Clara, CA Mike Rampelberg
408-980-4518
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