This work deals with the application of an active unbalance compensation scheme for a rotor-bearing system by simultaneously using two control strategies, consisting in the synthesis of a dynamic stiffness controller and the acceleration scheduling for the rotor speed. The rotor-bearing system consists of an asymmetrical Jeffcott-like rotor system with a servomechanism to position a sliding bea...

Within this work, the radial Proportional Derivative (PD-) controller along with eight-poles electro-magnetic actuator are introduced as a novel control strategy to suppress lateral oscillations of non-linear Jeffcott-rotor system. The proposed has been designed such that each pole magnetic generates an attractive force proportional displacement and velocity rotating shaft in direction pole. Ac...

Electromagnetic fields in the air gap of an electric machine produce electromagnetic forces between the rotor and stator. The total force exerted on the rotor due to the eccentric rotor position is called the unbalanced magnetic pull. This eccentricity force is directed roughly over the shortest air gap. At low frequencies, the vibration amplitudes of flexural modes may be large enough to coupl...