Passive repulsive MagLev: Concept and experimental demonstration

A simple demonstrator for a magnetic levitation vehicle (MagLev) based on r epulsive suspension forces generated by permanent magnets is presented. The lateral and yaw motions are stabilized using controlled electromagnets. A mathematical model, aimed mainly at defining the control strategy, has been developed and then experimentally validated using the demonstrator. Two di fferent control strategies have been tested, namely a zero position error a nd a zero average current control strategy. Both proved to grant a stable b ehaviour and to effectively counteract external force disturbances. This de monstrator will be used in future research on MagLev vehicles but also on m agnetic suspensions in general.