Performance Comparison of PID and LQR Controllers for Control of Non-Linear Magnetic Levitation System

Magnetic Levitation System (MLS) has become a current study in the field of engineering due to its advantages such as low energy consumption and minimum friction. MLSs are nonlinear unstable systems. Due complexity structure difficulty controls, many advanced control theories can be applied on these systems performance controllers evaluated. In this article, Proportional-Integral-Derivative (PID) Linear-Quadratic Regulator (LQR) controller methods MLS mathematically modeled MATLAB environment. Controller performances were compared results found. The obtained applicability PID LQR for addition, system was with five parameters. These rise time, settling maximum overshoot, overshoot steady-state error. produced great stability homogeneous response controller.