Perini, Efrain Araujo [UNESP]Koroishi, Edson Hideki [UNESP]Bueno, Douglas Domingues [UNESP]Lopes Júnior, Vicente [UNESP]Nascimento, Luiz de Paula do [UNESP]2014-05-272014-05-272009-12-01Conference Proceedings of the Society for Experimental Mechanics Series.2191-56442191-5652http://hdl.handle.net/11449/71454The recent years have seen the appearance of innovative system for acoustic and vibration attenuation, most of them integrating new actuator technologies. In this sense, the study of algorithms for active vibrations control in rotating machinery became an area of enormous interest, mainly due to countless demands of an optimal performance of mechanical systems in aircraft, aerospace and automotive structures. In this way, this paper presents an approach that is numerically verified for active vibration control in a rotor using Active Magnetic Bearings (AMB). The control design in a discrete state-space formulation is carried out through feedback technique and Linear Matrix Inequalities (LMI) approach. LMI is useful for system with uncertainties. The AMB uses electromagnetic forces to support a rotor without mechanical contact. By monitoring the position of the shaft and changing the dynamics of the system accordingly, the AMB keeps the rotor in a desired position. This unique feature has broadened for the applications of AMB and now they can be considered not only as a main support bearing in a machine but also as dampers for vibration control and force actuators. © 2009 Society for Experimental Mechanics Inc.engActive magnetic bearingLinear matrix inequalities (LMI)Rotating machineryVibration active controlActive controlActive Magnetic BearingActive magnetic bearingsActive vibration controlsActuator technologyAutomotive structuresControl designDesired positionElectromagnetic forcesFeedback techniquesForce actuatorsInnovative systemsMagnetic actuatorsMechanical contactMechanical systemsOptimal performanceState space formulationSupport bearingsUnique featuresVibration attenuationActuatorsAircraft controlExhibitionsInnovationLinear matrix inequalitiesState space methodsStructural dynamicsVibration controlMagnetic amplifiersTrabalho apresentado em eventoAcesso aberto2-s2.0-8486155302583389520920324446132730492840456