Design and Implementation of Controller for Electromagnetic Levitation System in Presence of Disturtabances

Abstract

Electromagnetic Levitation System (EMLS) is a friction-less and contactless mechatronics tech- newlinenology. This technology received huge applicability in most of engineering and science sectors newlinelike transportation engineering, space science, defence engineering, material science, civil en- newlinegineering, electrical engineering, biomedical engineering...etc. However, the first patent in this newlinearea was registered around the 1930s, the EMLS technology found their research focus around newlinethe globe in the late 1960s. Because of such focus, the EMLS gained a huge number of appli- newlinecations as MagLev trains, magnetic bearing, wind turbine, weighing machine, rocket launching newlinestation, magnetic suspension and many more. It is noticed during the literature review that the newlinemaximum utilization of this technology is being done in the area of the mass transportation newlinesector. The passenger-carrying trains used in the mass transportation sector with the EMLS newlinetechnology is termed as a Magnetically Levitated (MagLev) trains. This MagLev system is a newlineclass of the unstable, nonlinear and coupled electromechanical system by nature. Such an open- newlineloop benchmark behaviour attracts a large number of the researcher to perform more and more newlineresearch in this technology. Levitation is the most basic and common mode for the MagLev newlinetrains. It is observed from the literature that out of the three modes namely levitation, guid- newlineance, and propulsion, the maximum challenges have been found in the control of the levitation newlinemode due to open- loop instability, multi-channel disturbances and nonlinearity. To handle such newlinechallenges, the most common prototype structure out of several is the steel ball levitation sys- newlinetem. Several researchers have demonstrated that the prototype structures of the EMLS can be newlinemajorly categorized as Current Controlled EMLS (CC-EMLS), and Voltage Controlled EMLS newline(VC- EMLS). newlineIn this research, mathematical modelling and controller design are investigated for both types newlineof EMLS structures. However, out of two, the VC-EMLS is more ch