Designing the Non-Linear PID Controller for a Missile

PID controllers are the most prevailing & operative controllers in industry in recent 50 years. NPID Method that is an optimized method of usual PID, leads to get better operation in response quickness and, also overshoot simultaneously. In this paper, it is used NPID method that is an efficient method for control. NPID includes a non-Linear gain and a defined linear gain that connected serial. Using this method results in setting responses based on closed loop system control operation, that k_d (.), K_i (.) and K_P (.) are control gains varies with time and have constant values in linear proportional, integral, derivative controller. The missile control system contains a linear system to non-linear one. The missile control System responses to PID and NPID controller are shown at the end to compare their behaviors & effects.