Abstract
This paper describes a control method of magnetic levitation system which uses actuators and permanent magnets. The control method is pseudo zero power control, in which there is a little power loss during the system is operated near the equilibrium. As the adjustment of the air gap length varies the suspension force and stabilizes the system, the zero power control can be achieved by such as a spring force. First an experimental device is introduced and the principle of levitation is explained. Numerical simulations for the zero power control are carried out based on the model of the device, and some experimental examinations are shown.
