ABSTRACT
In the majority of applications, vibrations in a rotor system must be kept at a minimum to ensure optimal performance, minimised environmental transmission, and safe operation. Many approaches have been used to reduce their effects, including balancing, active bearing support, or rotor alterations, but few offer very compact and high-speed active control. This paper examines a novel active internal topology for hollow rotors. Low frequency actuation in the rotating frame of the rotor is thus equivalent to near synchronous actuation in a fixed, non-rotating, frame. Control strategies have been simulated and shown to decrease by 99% the runout and by 50% the reaction forces when crossing a critical speed.
