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Reconfigurable fuzzy cellThis invention relates to a reconfigurable fuzzy cell comprising a digital control programmable gain operation amplifier, an analog-to-digital converter, an electrically erasable PROM, and 8-bit counter and comparator, and supporting logic configured to achieve in real-time fuzzy systems high throughput, grade-of-membership or membership-value conversion of multi-input sensor data. The invention provides a flexible multiplexing-capable configuration, implemented entirely in hardware, for effectuating S-, Z-, and PI-membership functions or combinations thereof, based upon fuzzy logic level-set theory. A membership value table storing 'knowledge data' for each of S-, Z-, and PI-functions is contained within a nonvolatile memory for storing bits of membership and parametric information in a plurality of address spaces. Based upon parametric and control signals, analog sensor data is digitized and converted into grade-of-membership data. In situ learn and recognition modes of operation are also provided.
Document ID
19940016019
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Salazar, George A.
(NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Date Acquired
August 16, 2013
Publication Date
November 2, 1993
Subject Category
Computer Programming And Software
Report/Patent Number
Patent Application Number: US-PATENT-APPL-SN-761566
Patent Number: NASA-CASE-MSC-21613-1
Patent Number: US-PATENT-5,259,063
Accession Number
94N20492
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
NASA-CASE-MSC-21613-1|US-PATENT-5,259,063
Patent Application
US-PATENT-APPL-SN-761566
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