Mamdami Fuzzy Models are closer to human logic because we describe a system using words like "low", "medium", "high" etc. thus it is not necessary to know the dynamic equation that describes the system. On the other hand, Takagi-Sugeno technique is mainly used for dynamical systems with known or almost known nonlinear dynamic equations. We use T-S description in order to express the nonlinear system with many linear subsystems. So, the method that we should use depends on the problem that we have to solve. Both methods are reliable and offer very good results.