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Title:
FUZZY ARITHMETIC UNIT
Document Type and Number:
Japanese Patent JPH04218839
Kind Code:
A
Abstract:

PURPOSE: To perform more flexible arithmetic operation by processing the input signal to a fuzzy inference part and the operation value signal outputting from this part by a signal processing part and changing its coefficient as tuning data.

CONSTITUTION: An input signal normalization processing part 1 converts an input signal to a normalized signal. A normalized signal processing part 4 converts this normalized input signal in consideration of the gain and the bias and gives the result to a fuzzy inference part 2. An operation value signal processing part 5 converts the inference operation value in the fuzzy inference part 2 to a signal in consideration of the gain and the bias and gives it to a real quantity conversion processing part 3. The normalized signal processing part 4 changes the width and the bias of each membership function for an antecedent part and the operation value signal processing part 5 changes those for a consequent part. A form of membership functions is freely changed by setting the gain and the bias to easily change the execution rule even on the way of fuzzy inference.


Inventors:
Kono, Takashi
Application Number:
JP1990000401599
Publication Date:
August 10, 1992
Filing Date:
December 12, 1990
Export Citation:
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Assignee:
YOKOGAWA ELECTRIC CORP
International Classes:
G05B13/02; G06F9/44; G06F17/10; (IPC1-7): G05B13/02; G06F9/44; G06F15/31