A state-feedback control approach via inertial delay observer for Magnetic Levitation system

This paper proposes the state-feedback control (SFC) with inertial delay observer (IDO) for precise position control of one inch diameter steel ball in magnetic levitation system. The state variables considered to model this system are position of ball below the electromagnet, speed of ball and current through the electromagnet. The non-linearities present in magnetic levitation system is estimated using inertial delay observer. It gives lumped uncertainty and unavailable states of the system. Simulation results are present in terms of their ability to track the reference trajectory.