In this study, a simulator for a model-based(MB) reflex agent is designed in C++. Vacuum cleaner robot which is getting popular day by day is used as an agent at this simulator. Fuzzy logic which is a common control method is used to determine the starting time that robot should begin the cleaning. In addition to fuzzy logic controller (FLC), periodically time estimation is realized every experiment. The results obtained in different conditions with using and without using FLC are compared and listed.