actuators, adaptive control, adaptive filters, feedback, feedforward, magnetic bearings, open loop systems, rotors,   vibration control, LMS, active magnetic bearing systems,  actuators, adaptive feedforward vibration control, adaptive filter algorithm, feedback control system, open loop system, rotating machine, rotor mass unbalances, synchronous disturbance forces, touch down bearings, adaptive control, adaptive filters, feedback control, feedforward systems, magnetic levitation, programmable control, vibration control, vibration measurement