/*
	Example: Different membership functions

									Pablo Cingolani 
									pcingola@users.sourceforge.net
*/

FUNCTION_BLOCK testVariables

VAR_INPUT				// Define input variables
	inVar : REAL;
END_VAR

VAR_OUTPUT				// Define output variables
	outVar : REAL;
END_VAR

// Pairwise linear
FUZZIFY inVar
	TERM poor := TRIAN 0 1 2;
	TERM good := TRIAN 2 5 7;
	TERM excellent := TRIAN 7 8 10;
END_FUZZIFY

DEFUZZIFY outVar
	DEFAULT = 0
    TERM low := FUNCTION (inVar * 1.0);
    TERM mid := FUNCTION (inVar * 2.0) + 1;
    TERM high := FUNCTION (inVar * 3.0) + 5 * SIN(inVar);
	METHOD : COGS;
END_DEFUZZIFY

RULEBLOCK
	ACT : MIN;
	RULE 1 : IF inVar IS poor THEN outVar IS low;
	RULE 2 : IF inVar IS good THEN outVar IS mid;
	RULE 3 : IF inVar IS excellent THEN outVar IS high;
END_RULEBLOCK

END_FUNCTION_BLOCK