This paper aims to model and simulate washing machine based on user expert
knowledge using fuzzy logic. Fuzzy logic inference process to control washing machine in this
study use Mamdani method. The method has four steps Fuzzification of linguistic variable, rule
evaluation (based on expert experience), aggregation of the rules outputs and final
defuzzification. Input linguistic variable used are dirtiness of the clothes, type of fabric, type of
dirt and amount of the clothes and the output variable is washing time, washing speed, water
intake and water temperature. The system is designed and simulated using Fuzzy logic toolbox
on MATLAB. Result show that the washing machine inference relate to user expert perception.
The main advantage of using fuzzy logic in washing machine is that it reduce water and
electricity consumption also good time management.