Abstract:

Almost none of the systems is not linear in real life. Fuzzy logic control has emerged as an alternative approach with non - linear methods. Non - linear characteristics of the systems are represented by membership functions, fuzzy rule base and fuzzy inference process. The systems that contain non - stationary, energy storage elements and system parameters that vary depending on the state variable are non - linear dynamic systems. Control applications of dyn amic systems are difficult to realize because dynamic systems have usually non - linear structure. Fuzzy logic based controllers that have the ability with non - linear conversion capabilities are successful control applications of such systems. The performanc e of this controller can be increased by treating the method used at the design stage. In this study, fuzzy logic based controller that is improved nonlinear model of dc servo motor for speed control by using different fuzzy membership functions will be in vestigated on the system performance.