# fuzzy logic

#### zueyan

Joined Aug 28, 2010
1
hi..
can I know what software can be used to program the PIC18F4550 chip using Fuzzy logics?
thank u..

#### Papabravo

Joined Feb 24, 2006
14,883
Do you have any indication that such a thing exists? I'm not certain if there was ever a language standard that embodied that approach making it much less likely that the PIC18F4550 would ever be a possible target.

#### BMorse

Joined Sep 26, 2009
2,675
"Fuzzy Logic" is a term used to describe certain code algorithms to accomplish a task or function >> http://en.wikipedia.org/wiki/Fuzzy_logic

You can code "fuzzy logic" in any environment you want.....

B. Morse

#### Potato Pudding

Joined Jun 11, 2010
688
If I have this wrong please just let me know.

What I understood of Fuzzy Logic, it is a term that basically refers to systems that let some processes run with what is in essence if not so often in fact an analog control system.

For example you can put two analog sensor signals into an op amp and use feedbacks to combine them or have them cancel each other, in a form of analog processing where you can even introduce some hysterisis. Then you feed the conditioned output of the op amp into a DAC (or even just run it through a comparator), probably do some digital processing and the combined system is a type of Fuzzy Logic circuit.

When you feed the two inputs into DACs at the start and digitally process them start to finish including a digital duplicate of what the analog OP AMP would have done then that is what is now more commonly understood as Fuzzy Logic.

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#### BMorse

Joined Sep 26, 2009
2,675
In essence I guess you could use "Fuzzy logic" that way...

Fuzzy logic is a form of multi-valued logic derived from fuzzy set theory to deal with reasoning that is approximate rather than precise.
Fuzzy logic emerged as a consequence of the 1965 proposal of fuzzy set theory by Lotfi Zadeh.[2][3] Though fuzzy logic has been applied to many fields, from control theory to artificial intelligence, it still remains controversial among most statisticians, who prefer Bayesian logic, and some control engineers, who prefer traditional two-valued logic.
The furby toy is a good example of a device which uses "fuzzy logic" to "learn" from its environment and interact with the user....

B. Morse