Fuzzy Logic What is that? Prof. Dr. T. Nouri

Fuzzy Sets 1-2

Fuzzy Sets 2-2

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 High Etc. Rule 1: If Distance is Middle and Speed is High Then Brake is Mittel

Output Fuzzy Set: Brake

Facts: Distance = 35 m Speed = 90 Km/h

Distance = 35 m, LowSpeed = 90 km/h, High

Result of Rule 1Result of Rule 2 Addition of Two Fuzzy Sets

Defuzification Center 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