Monday 16 March 2015

Fuzzy Control

Fuzzy Control system is a control system based on fuzzy logic a mathematical system that analyzes analog input values in terms of logical variables that take on continuous values between 0 and 1, in contrast to classical or digital logic, which operates on discrete values of either One or Zero i-e (true or false)


Fuzzification

The Fuzzification comprises the process of transforming crisp values into grades of membership for linguistic terms of fuzzy sets OR Modifies inputs so that rule base can be interpreted and compared in rule base. The membership function is used to associate a grade to each linguistic term such as
NEGATIVE LARGE (NL), NEGATIVE MEDIUM (NM), ZERO, POSITIVE MEDIUM (PM), POSITIVE LARGE (PL)

Defuzzification:
Converts the conclusion to crisp input for the controller.

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