1991-07-26
1996-01-16
Downs, Robert W.
395 76, 395900, G05B 1300
Patent
active
054855519
ABSTRACT:
The knowledge of an expert user expressing the relationships between phenomena and a conclusion (a rule) is stored prior to the use of the device. Input data are applied to this knowledge in order to make an inference. The possibility of the conclusion is calculated, and the clearness of each phenomenon relative to the possibility of each conclusion is determined by the fuzzy inference device. The phenomena related to a single conclusion which have low static information amount or clearness are selectively eliminated. In this way the rule can be adjusted, the processing time can be reduced, and the reliability of the conclusion can be improved. In second and third embodiments of the invention, the knowledge of an expert user expressing the relationships between phenomena and conclusions (rules) is stored prior to the use of the device. Inferences are made by applying input data to this knowledge. The possibilities of conclusions are calculated; the clearness of each phenomenon relative to the calculated possibility of each conclusion is determined; and the summed clearness of each conclusion is calculated by the fuzzy inference device. Guidance is provided to select which phenomena to input in order to maximize the sum of the clearnesses. The phenomena data selected by this guidance system can be input by a human or by an automatic means.
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Ejima Hideji
Yoshikawa Taiji
Downs Robert W.
Omron Corporation
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