One of the first sources to visit is inform.
http://www.fuzzytech.com/
They are offering a variety of various fuzzy compiler, including 8051 and also PC.

Look for Lofti Zadeh- one of the fathers of fuzzy technology at http://www.cs.berkeley.edu/~zadeh/

And here ist something to practice fuzzy for free
http://fuzzy.cs.uni-magdeburg.de/nefcon/ne...efcon.html

In general: Fuzzy technology ist seldom understood -as some of the previous messages show ;o))- very often overestimated and is a real help for many applications which don't follow strict formulas but general rules.

I used frequently combinations of conventional control technology and fuzzy logic e.g. for servos, signal regeneration, automatic gain controls and pattern recognition and even for every day live situations ;o))

Regards

otto