Active vibration reduction of rigid rotor by kinematic excitation of bushes of journal bearings

Abstract

Possibilities of active lateral vibration reduction of a symmetric, rigid rotor supported by journal bearings are given. They were obtained by computational modelling. Efficiency of the feedback P and PD controllers in the stable revolution interval was examined. The linearized rotor system model was used. The results of the theoretical analysis are assigned for a testing stand where the bearing bush motions are deactivated by piezoelectric actuators connected to the controllers.

Keywords

• bearing
• controller
• rotor system
• vibration reduction