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<title> jFuzzyLogic: Open Source Fuzzy Logic (Java) </title>
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<a href="http://jfuzzylogic.sourceforge.net/">jFuzzyLogic</a>
<p style="font-size: 12pt" align=right><b>Open Source Fuzzy Logic library and FCL language implementation</b></p>
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<center><h2>jFuzzyLogic</h2></center>
<a href="http://sourceforge.net/projects/jfuzzylogic">Download</a><br>
<a href="plugin.html">Eclipse plugin</a><br>
<center>Examples</center>
<a href=example_java.html>Java example</a><br>
<a href=java.html>Java detailed example</a><br>
<a href=example_fcl.html>FCL example</a><br>
<a href=fcl.html>FCL detailed example</a><br>
<a href=example_parametric_optimization.html>Optimization example</a><br>
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<a href="../doc/iec_1131_7_cd1.pdf">FCL (pdf)</a><br>
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<center><h3> FCL Example </h3></center>
This is an example of a Fuzzy Control Language (FCL) program:<p>
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<pre>
// Block definition (there may be more than one block per file)
FUNCTION_BLOCK tipper
// Define input variables
VAR_INPUT
service : REAL;
food : REAL;
END_VAR
// Define output variable
VAR_OUTPUT
tip : REAL;
END_VAR
// Fuzzify input variable 'service'
FUZZIFY service
TERM poor := (0, 1) (4, 0) ;
TERM good := (1, 0) (4,1) (6,1) (9,0);
TERM excellent := (6, 0) (9, 1);
END_FUZZIFY
// Fuzzify input variable 'food'
FUZZIFY food
TERM rancid := (0, 1) (1, 1) (3,0) ;
TERM delicious := (7,0) (9,1);
END_FUZZIFY
// Defzzzify output variable 'tip'
DEFUZZIFY tip
TERM cheap := (0,0) (5,1) (10,0);
TERM average := (10,0) (15,1) (20,0);
TERM generous := (20,0) (25,1) (30,0);
// Use 'Center Of Gravity' defuzzification method
METHOD : COG;
// Default value is 0 (if no rule activates defuzzifier)
DEFAULT := 0;
END_DEFUZZIFY
RULEBLOCK No1
// Use 'min' for 'and' (also implicit use 'max'
// for 'or' to fulfill DeMorgan's Law)
AND : MIN;
// Use 'min' activation method
ACT : MIN;
// Use 'max' accumulation method
ACCU : MAX;
RULE 1 : IF service IS poor OR food IS rancid
THEN tip IS cheap;
RULE 2 : IF service IS good
THEN tip IS average;
RULE 3 : IF service IS excellent AND food IS delicious
THEN tip is generous;
END_RULEBLOCK
END_FUNCTION_BLOCK
</pre>
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<table border=0 align=center bgcolor=#aaaaaa><tr><td align=center> See FCL code detailed explanation <a href="fcl.html"><b>here</b></a></td></tr></table>
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<p style="font-size: 8pt" align=center><font color=#777777> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - </font></p>
<center><b>Author: <a class="body" href="http://www.mcb.mcgill.ca/~pcingola/">Pablo Cingolani</a> (pcingola@users.sourceforge.net</a>)</b></center>
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Key words (for search engines): <br>
Fuzzy logic <br>
Fuzzy logic software <br>
Fuzzy logic package <br>
Fuzzy logic library <br>
Fuzzy logic sourceforge sf.net <br>
Open source <br>
GNU <br>
GPL LGPL <br>
java <br>
Windows Linux OSX <br>
FCL <br>
IEC 1131 <br>
IEC 61131 <br>
IEC 61131 part 7 <br>
IEC 61131-7 <br>
<a href="http://en.wikipedia.org/wiki/Fuzzy_logic">Fuzzy logic Wikipedia</a> <br>
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