07-04-2012, 02:31 PM
FUZZY LOGIC AND APPLICATIONS
fuzzy-system.ppt (Size: 1.05 MB / Downloads: 45)
Concept of Fuzzy Description
A linguistic variable has values expressed in words, representing qualitative concepts or impressions about the state of a system
The idea is to be capture vague, imprecise, inexact, fuzzy verbal descriptions
Large, medium, big, not large, etc…
Fuzzyfication
To convert a crisp set into a fuzzy set
Will increase the fuzziness of a fuzzy set.
Fuzzyfier function F that controls the fuzziness of a set.
‘F’ may be one or more simple parameters. Fuzzy set describing large number is given as
Fuzzy Control
Fuzzy Control combines the use of fuzzy linguistic variables with fuzzy logic
Example: Speed Control
How fast am I going to drive today?
It depends on the weather.
Disjunction of Conjunctions
CONCLUSION
Fuzzy logic provides an alternative way to represent linguistic and subjective attributes of the real world in computing.
It is able to be applied to control systems and other applications in order to improve the efficiency and simplicity of the design process.