Robust Controller Design for Electromagnetic Levitation System

Abstract

Research in nonlinear systems has gained significant growth in the past decades. newlineSystems that exist physically inherit the properties of nonlinearity. Additionally, a newlinelarge gamut of complex systems, such as rotary inverted pendulum (RIP), ball and newlinebeam system, electromagnetic levitation system (EMLS), and many more, have unstable newlinenonlinear dynamics. Electromagnetic levitation systems have less wear and newlinetear, which means they require less maintenance. The EMLS is widely accepted in newlinemany engineering and science domains, namely biomedical engineering, civil engineering, newlinedefence engineering, electrical engineering, nuclear engineering, and considerably newlinemore. EMLS provides high-precision positioning, less maintenance, flexibility, costeffectiveness, newlineaccuracy, noise reduction, adaptability, and sophisticated control capabilities. newlineDue to its wide acceptability and enormous advantages in different fields, the newlineelectromagnetic levitation system is utilised in many applications, such as magnetic newlinelevitation (Maglev) trains, wind turbines, rocket launchers, magnetic bearings, weighing newlinemachines, magnetic suspension, and many others. Literature surveys suggest that newlinethe maximum utilisation of this technique is in the mass transportation sector. Magnetically newlinelevitated trains are based on the electromagnetic levitation technique, which newlinecarries passengers and is part of the transportation industry. Unstability, nonlinearity, newlineand electromechanical coupling define the nature of the Maglev system. Such a newlinenature of the Maglev system attracts more and more researchers to study and analyse newlinethis system and to develop a robust controller. The control of the Maglev system is newlinechallenging due to open-loop instability, external disturbances, and parameter uncertainty. newlineThe steel ball levitation system is one of the most common prototypes for newlinehandling the highlighted challenges. The Current-Controlled Electromagnetic Levitation newlineSystem (CC-EMLS) and the Voltage-Controlled Electromagnetic Levitation newlineSystem (VC-EMLS) are two majorly categorised str