[sci.electronics] Designing with Fuzzy Logic!

EC13@LIVERPOOL.AC.UK (05/26/91)

Is there any engineer, scientist, designer..etc. familiar with 'Fuzzy Logic'
and its applications in industry, like electronics, who can gives me
her/his own impression about this new logic, its positives,
negatives, advantages, disadvantages,....etc.


A. Sultan

richard@pegasus.com (Richard Foulk) (06/01/91)

>Is there any engineer, scientist, designer..etc. familiar with 'Fuzzy Logic'
>and its applications in industry, like electronics, who can gives me
>her/his own impression about this new logic, its positives,
>negatives, advantages, disadvantages,....etc.
>

How about Fuzzy Marketing?

"Fuzzy Logic" is just the application of higher resolution controls in
the hopes of attaining greater efficiency or better control.

An example is a house thermostat.  When the temperature rises to
75-degrees the cooling system is turned on and when it drops to 70-degrees
it is turned off.  Basically on/off control over the cooling system.

With "Fuzzy Logic" you might run the cooling system constantly during
times of demand, but at a reduced level of output.  The cooling system
would be capable of finer adjustments in its output instead of just on and
off.  You would presumably be able to get by with a smaller cooling system
this way, and temperatures wouldn't vary as much.

It's a different way of looking at control systems and a cute new term to
keep the consumer amazed.  (The Japanese marketplace has been flooded with
new products featuring this new fuzzy thinking.  They use it as a ploy to
get the consumer to trade in his perfectly good widget for a new one
that's even more "High Tech".)

It's really just another step in the natural progression from mechanical
to microprocessor-based controls.


-- 
Richard Foulk		richard@pegasus.com

will@rins.ryukoku.ac.jp (will) (06/06/91)

	The Japanese think that they will dominate the world of fuzzyness
	because as one of my japanese professor friends said "we think like
	fuzzy logic, you americans cannot, so therefore we shall dominate it"

	So, as a tribute to my japanese friend, here are some examples of
	fuzzy thinking:

	the vacuum sweeper:
		"I'd love to vacuum under ordinary circumstances, but i'm
		sorry to say i'm just not in the mood today".

	the television:
		"The programs being aired are totally unsuitable for viewing,
		so I really must make the decision to take the day off".

	the telephone(while your on it):
		"Since this conversation is taking a turn for the worse, i'll
		have to end it momentarily".

	Your discusion:
		"...I was really thrilled when I first bought all these
		fuzzy-login appliances.  You know, they approximate human
		judgment and subjective choice.  But now i'm not so sure..."

	the hair dryer:
		"I have determined that your hair is not quite wet enough to
		be properly dried".

	and

	the washing machine:
		"After examining your laundry i've come to the conclusion that
		I don't want to wash it".


	So when you go down to buy your japanese made (americans don't make
	anything) appliance just remember the lessons here "Your next enemy
	may be your telephone or some other uninvited guest appliance".


						Will......