Feedback linearization based optimal controller design for electromagnetic levitation system

This paper presents the analysis of feedback linearization based optimal controller design for ElectroMagnetic Levitation (EML) system, which is a class of nonlinear and unstable system. Using feedback linearization method, nonlinear model is first converted into controllable linearized model in large operating range under certain conditions. Using linearized model, optimal controller is designed for stabilizing and tracking control of EML system. Feedback linearization based optimal controller shows kind of smooth, stabilizing and tracking response under different trajectories and bounded load variations due to variation of parameters. Simulation results and conditions under which mentioned approach is applicable are presented to validate the contribution in the paper.