Fuzzy Logic
What is that?
Prof. Dr. T. Nouri
[email protected]
SpeedDistance
Brake
Example: Fuzzy Driving
Fuzzy Processing Unit, FPU
Input Fuzzy Set : Distance
Input Fuzzy Set : Speed
Knowledge-Base
Rule 2: If Distance is Low and Speed is High Then Brake is HighEtc.
Rule 1: If Distance is Middle and Speed is High Then Brake is Mittel
Output Fuzzy Set:Brake
Facts:
Distance = 35 mSpeed = 90 Km/h
Distance = 35 m, Low Speed = 90 km/h, High
Result of Rule 1 Result of Rule 2
Addition of Two Fuzzy Sets
DefuzificationCenter of Gravity
71% of Brake Intensity
Deffuzification
• The Output Fuzzy Set is converted into Discret (Crisp) Value.• Center of Gravity Method is the most used to make this conversion