Design and Control of Magnetic Levitation System

Abstract

Magnetic levitation systems find their applications in many systems and are very have practical importance. Because of their practical applications such systems are gaining much attraction. This research paper dealing with the design and implementation for controlling magnetic levitation system. A nonlinear behavior model representation for Magnetic Levitation System (MLS) is designed initially using Simulink as a modeling tool. The system considered consists of a ferromagnetic ball having some specific amount of mass. The object is suspended in the air gap using the force exerted by magnetic field whose strength can be controlled through applied voltage - known as the Magnetic Levitation System. This levitation system can be used to adjust the position and to lift the ball in air gap. These systems are highly nonlinear and that is why are highly unstable. It is therefore required that a system must be there to achieve linearization and highly precise positioning of the ferromagnetic ball. For that purpose, a Proportional-Integral-Derivative (PID) controller and state space analysis technique is adopted to design a linear feedback control system. In this paper the mathematical modeling and simulations have been done on a magnetic levitation system that is dynamically non-linear. State space modeling has been done to get linearized output response and precise position of object.