I am no expert but fuzzy logic is used more as a marketing tool than a
problem solving tool. When transistor radios were the newest thing they
advertised themselves as having n number of transistors. Supposedly the more
transistors it had the better the radio. Well the marketing guys got a hold
of that and had the designers use a transistor with the base tied to the
collector everywhere they needed a diode. This artificially raised the
number of transistors needed so they could advertise more. Mine had 7
transistors. Three or four of them were used as diodes. You'll find fuzzy
logic used the same way.

In most cases a P, PI or PID works much better. One place fuzzy seems to
work well is with a very non-linear control problem. Sometimes you just
can't tune a loop for every condition encountered. But if you really need
accuracy for a non-linear loop use both. Fuzzy to get you in the ballpark
and analog to keep it dead nuts.

- -Mark Jurras

>>> Dave Williams <102722.3063@COMPUSERVE.COM> 30 October 1996  1:20 am >>>
The biggest problem I have with  fuzzy logic is

<<snip>>

 I have been told that some fuzzy designers after
completing the design run simulations to determine BW, etc.   But that seem
backwards to me.  Maybe the fuzzy experts out there can answer these
questions
or point me in the right direction.