A Study and Implementation of Stability in Electrodynamic Levitation Systems
Marius Pakstys
A Study and Implementation of Stability in Electrodynamic Levitation Systems.
Rel. Nicola Amati, Renato Galluzzi, Andrea Tonoli. Politecnico di Torino, Corso di laurea magistrale in Ingegneria Meccanica (Mechanical Engineering), 2022
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Abstract
The increased interest in electrodynamic levitation systems for the purpose of commercial transportation has put a focus on the need to fully characterise their dynamic behaviour. The requirement for passenger comfort has introduced challenges related to the stability and control of vibrations that may be induced from track irregularities and changing weight distribution in the vehicle. The aim of the present thesis is to understand the solution to the inherent instability of the levitating system by means of a quarter car model, with the possibility of validating the same by means of a dedicated test bench. A voice coil that exhibits a sprung and unsprung mass provides the ability to practically study the system, by considering a lack of decoupling of the masses, as well as an application of passive damping.
A COMSOL Multiphysics® model of the experimental system is refined to account for magnet misalignment and spacing, also considering two differing orientations of the Halbach array
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