ON STABILITY OF THE ELECTROMAGNETIC SUSPENSION
ROTOR IN SPACE OF CONTROL PARAMETERS
The problem of stabilizing the rotor in an electromagnetic suspension is considered. It is shown that initially a nonlinear system can be reduced to a linear form via feedback linearization approach. For mathematical model of a rigid rotor, consideration of a delay in the control system results in restrictions on the maximum values of the control parameters of the linearized system. The numerical and experimental results of the model of a flexible rotor qualitatively coincide with analytical estimation of a domain of control parameters and reveal the advantage of a linear system over nonlinear one. Due to the absence of subharmonic vibration in the oscillation spectrum of the linearized system, the rotor oscillation amplitude is substantially reduced.