Digital implementation of a magnetic suspension control system for laboratory experiments

In this paper a digital control experiment using a magnetic suspension system is described. Although the results presented are for a quadratic optimal controller, the control system configuration used can cope with more advanced real-time control algorithms. Practical issues concerning parameter identification, computer simulation, discrete-time implementation, use of a digital signal processor based controller and filter design are addressed. Simulated and experimental responses are presented and analyzed. Finally, a detailed plan on reproducing the control experiment is included.