Programmable controller with fuzzy control function, fuzzy contr

Details Programmable controller with fuzzy control function, fuzzy contr Programmable controller with fuzzy control function, fuzzy contr

1992-11-25

1993-11-09

MacDonald, Allen R.

395900, 395 51, G06F 944

Patent

active

052610365

ABSTRACT:
A programmable controller (PC) to which fuzzy logic principles have been applied is disclosed. The controller improves operational speed by performing several of the fuzzy logic functions in the A/D and D/A converters traditionally used in PC units, thereby allowing portions of a fuzzy logic control operation to proceed in parallel and independently. The invention dispenses with the use of look-up tables and the like for fuzzy membership functions, fuzzy output functions, etc., by defining the functions in terms of (typically) three points in an orthogonal coordinate system, saving memory space. The invention also includes a fuzzy control process having the described aspects and a method of monitoring a PC or PCs having a fuzzy control function.

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Uehara et al., "A Data Converter for Analog/Fuzzy-Logic Interface", Electronics & Communications in Japan, vol. 67, No. 12, Dec. 1984, pp. 106-111.

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