Design, testing and implementation of a linear state variable feedback controller for providing tracking/regulation of a large platform of a Maglev vehicle

• Published in: Proceedings of the Institution of Mechanical Engineers. Part I, Journal of systems and control engineering Journal of systems and control engineering, 2023-08, Vol.237 (7), p.1206-1218
• Main Authors: Kundu, Janardan, Koledov, Victor, Stephan, Richard M, Deng, Zigang, Borah, Manashita, Roy, Binoy Krishna, von Gratowski, Svetlana, Pati, Avadh, Kashyap, Satadru
• Format: Article
• Language: English
• Subjects: Air gaps; Coils; Compensators; Control systems; Feedback control; Inductance; Magnetic levitation; Magnetic levitation vehicles; Mechanical engineering; Operating zones; Parameter robustness; Parameter sensitivity; State variable; Tracking control
• ISSN: 0959-6518; 2041-3041
• DOI: 10.1177/09596518231153689

The basic parameters of an electromagnetic levitation systems are resistance of the coil, inductance of the coil, air-gap between magnet and the object, coil current, mass of the object, controller parameters and so on. The levitation systems are highly unstable and strongly non-linear. In real-life applications, these parameters are supposed to vary. A proportional–integral controller for the inner current control loop and a lead compensator for the position control loop have been designed and tested. The performance study under various parametric effects has been investigated broadly. Finally, both the stability for the proposed levitation system has been achieved with a better operating zone using linear state variable feedback controllers. The system dynamic performances have been recorded for variations of physical system parameters. The sensitivity/robustness of the set-up has been studied. This study will give an insight for designing any corrective measures and an overall idea to develop a levitation system.