Fuzzy Control has its place, but it is not the great solution or
    replacement for PID control.  Pease Porridge of Electronic Design ran
    a contest for a Fuzzy Control system that he could not duplicate or
    exceed the performance of.  He won every challenge using op-amps and
    classic control theory. Fuzzy Control and Fuzzy Logic has had lots of
    boasting and very little real substance.

Of course, this sounds like the old compiler vs assembly coder debate.  If
fuzzy logic allows less skilled people to produce bettter control system,
then it definately has a place.  Not everyone is Bob Pease...

(Not that *I'm* a believer...)

BillW